Recognised as Number
347
- Positive
- Odd
- Prime
- 3 digits
347 is an odd 3-digit integer and a prime number. It has 2 divisors and a digital root of 5.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityPrime
Absolute value347
Digit count3
Digit sum14
Digit product84
Multiplicative persistence3times the digit product can be taken before one digit is left
Digital root5repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation347
Distinct prime factors1347
Number of divisors2
Sum of divisors σ(n)348
Aliquot sum1sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)346integers below n that share no factor with it
Carmichael function λ(n)346the smallest exponent with aˣ ≡ 1 for every unit coprime to n
Möbius function μ(n)−11 distinct prime factor, an odd number of them
SquarefreeYesno repeated prime factor
All divisors1, 3472 in total
Arithmetic
Representations
Decimal347
Binary1010110119 bits
Octal533
Hexadecimal15B
Base 369N
Roman numeralCCCXLVII
In wordsthree hundred and forty-seven
Ordinalthree hundred and forty-seventh
Scientific notation3.47 × 10^2
Engineering notation347
In other bases
Ternary110212base 3; the most digit-efficient integer base after e: 6 digits
Quinary2342base 5; one hand: 4 digits
Septenary1004base 7: 4 digits
Nonary425base 9; each digit is two ternary digits: 3 digits
Duodecimal24bbase 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 3 digits
Vigesimalh7base 20; hands and feet, and the Mayan and Yoruba systems: 2 digits
Sexagesimal5:47base 60; Babylonian, and still how an hour and a circle are divided: 2 digits
Balanced ternary1110TTdigits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary11010101111base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
0000000101011011
Bit length9 bitsto write the magnitude
Set bits6the population count, or Hamming weight
Zero bits3within that length
Bit parityeven6 set bits, so even; not the same as the number itself being odd
Highest set bitbit 8worth 256
Lowest set bitbit 00 trailing zeros
Power of twoNo
Bytes201 5b
Gray code111110110n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
16-bit0000000101011011
32-bit00000000000000000000000101011011
64-bit0000000000000000000000000000000000000000000000000000000101011011
One's complement1111111010100100at 16 bits, every bit flipped
Bits reversed1101101010000000at 16 bits
Rotated left by 10000001010110110at 16 bits, wrapping
Shifted left by 11010110110= 694, no wrap
Shifted right by 110101101= 173, discarding the low bit
These bits as a double1.71440779 × 10^-321≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
347 to the power 2120,409
347 to the power 341,781,923
347 to the power 414,498,327,281
347 to the power 55,030,919,566,507
First ten multiples347, 694, 1,041, 1,388, 1,735, 2,082, 2,429, 2,776, 3,123, 3,470
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 2
Divisible by 4No, remainder 3
Divisible by 5No, remainder 2
Divisible by 6No, remainder 5
Divisible by 7No, remainder 4
Divisible by 8No, remainder 3
Divisible by 9No, remainder 5
Divisible by 10No, remainder 7
Divisible by 11No, remainder 6
Divisible by 12No, remainder 11
Divisible by 100No, remainder 47
Collatz (3n + 1) trajectory
Steps to reach 1125the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps347 → 1,042 → 521 → 1,564 → 782 → 391 → 1,174 → 587 → 1,762 → 881 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage34,700%
347% as a decimal3.47
347% of 100347
347% of 1,0003,470
As a fraction of 100347/100
Read another way
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Derived from 347
Other readings
Also reads as
#334477 (colour)
- #334477
- Blue
- Dark
- Nearest: Dark slateblue
#334477 is a blue with RGB values 51, 68, 119 and HSL 225°, 40%, 33%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.
Colour values
#334477#334477
HEX#334477
HEX (short)#347
RGBrgb(51, 68, 119)
RGB (0–1)0.2, 0.2667, 0.4667
RGB percentages20%, 26.7%, 46.7%
HSLhsl(225, 40%, 33.3%)
HSV / HSBhsv(225, 57.1%, 46.7%)
CMYK57.1%, 42.9%, 0%, 53.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,359,863
CSS custom property--colour: #334477;
Brightness & contrast
Relative luminance0.0617WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.4:1
Contrast with white9.4:1WCAG normal text: AAA
Contrast with black2.23:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#CCBB88
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.4:1WCAG large text: AAA
Contrast with black, large text2.23:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#776633
Analogous#336677, #443377
Triadic#773344, #447733
Split complementary#774433, #667733
Tetradic#773366, #776633, #337744
Tints, shades & saturation
Channel breakdown
R51
G68
B119
Red51 (20%)
Green68 (26.7%)
Blue119 (46.7%)
Hue225°
Saturation (HSL)40%
Lightness33.33%
Dominant channelBlue
Hex per channelR 33 · G 44 · B 77
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Harmonies
Similar named colours
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