Number
343
- Positive
- Odd
- Composite
- Perfect cube
- 3 digits
343 is an odd 3-digit integer and a composite number. It has 4 divisors and a digital root of 1.
The canonical address for this page is /343.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value343
Digit count3
Digit sum10
Digital root1repeated digit sum
PalindromicYesreads the same backwards
Perfect cubeYes, 7³
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation7^3
Distinct prime factors17
Number of divisors4
Sum of divisors σ(n)400
Aliquot sum57sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)294integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 7, 49, 3434 in total
Arithmetic
Representations
Decimal343
Binary1010101119 bits
Octal527
Hexadecimal157
Base 369J
Roman numeralCCCXLIII
In wordsthree hundred and forty-three
Ordinalthree hundred and forty-third
Scientific notation3.43 × 10^2
Engineering notation343
Nearest landmarks
Powers & multiples
343 to the power 2117,649
343 to the power 340,353,607
343 to the power 413,841,287,201
343 to the power 54,747,561,509,943
First ten multiples343, 686, 1,029, 1,372, 1,715, 2,058, 2,401, 2,744, 3,087, 3,430
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 3
Divisible by 5No, remainder 3
Divisible by 6No, remainder 1
Divisible by 7Yes
Divisible by 8No, remainder 7
Divisible by 9No, remainder 1
Divisible by 10No, remainder 3
Divisible by 11No, remainder 2
Divisible by 12No, remainder 7
Divisible by 100No, remainder 43
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 steps343 → 1,030 → 515 → 1,546 → 773 → 2,320 → 1,160 → 580 → 290 → 145 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage34,300%
343% as a decimal3.43
343% of 100343
343% of 1,0003,430
As a fraction of 100343/100
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Derived from 343
Other readings
Also reads as
#000343 (colour)
- #000343
- Blue
- Dark
- Nearest: Midnight blue
#000343 is a blue with RGB values 0, 3, 67 and HSL 237°, 100%, 13%. It is a dark colour, so white text on it reaches 19.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.
Colour values
#000343#000343
HEX#000343
RGBrgb(0, 3, 67)
RGB (0–1)0, 0.0118, 0.2627
RGB percentages0%, 1.2%, 26.3%
HSLhsl(237.3, 100%, 13.1%)
HSV / HSBhsv(237.3, 100%, 26.3%)
CMYK100%, 95.5%, 0%, 73.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer835
CSS custom property--colour: #000343;
Brightness & contrast
Relative luminance0.0047WCAG 2.x, 0 is black and 1 is white
Perceived brightness22.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.19:1
Contrast with white19.19:1WCAG normal text: AAA
Contrast with black1.09:1WCAG normal text: Fail
Greyscale equivalent#070707
Inverted#FFFCBC
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.19:1WCAG large text: AAA
Contrast with black, large text1.09:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#434000
Analogous#002543, #1F0043
Triadic#430003, #034300
Split complementary#431E00, #254300
Tetradic#430025, #434000, #00431F
Tints, shades & saturation
Channel breakdown
R0
G3
B67
Red0 (0%)
Green3 (1.2%)
Blue67 (26.3%)
Hue237.31°
Saturation (HSL)100%
Lightness13.14%
Dominant channelBlue
Hex per channelR 00 · G 03 · B 43
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Harmonies
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