Number
731,401
- Positive
- Odd
- Composite
- 6 digits
731,401 is an odd 6-digit integer and a composite number. It has 4 divisors and a digital root of 7.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value731,401
Digit count6
Digit sum16
Digital root7repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation11 × 66,491
Distinct prime factors211, 66,491
Number of divisors4
Sum of divisors σ(n)797,904
Aliquot sum66,503sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)664,900integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 11, 66,491, 731,4014 in total
Arithmetic
Representations
Decimal731,401
Binary1011001010010000100120 bits
Octal2624411
HexadecimalB2909
Base 36FOCP
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsseven hundred and thirty-one thousand, four hundred and one
Ordinalseven hundred and thirty-one thousand, four hundred and first
Scientific notation7.31401 × 10^5
Engineering notation731.401 × 10^3
Nearest landmarks
Powers & multiples
731,401 to the power 2534,947,422,801
731,401 to the power 3391,261,079,984,074,201
731,401 to the power 4286,168,745,161,431,854,685,601
731,401 to the power 5209,304,106,379,816,419,948,903,257,001
First ten multiples731,401, 1,462,802, 2,194,203, 2,925,604, 3,657,005, 4,388,406, 5,119,807, 5,851,208, 6,582,609, 7,314,010
Powers of twoBetween 2^19 (524,288) and 2^20 (1,048,576)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 1
Divisible by 5No, remainder 1
Divisible by 6No, remainder 1
Divisible by 7No, remainder 6
Divisible by 8No, remainder 1
Divisible by 9No, remainder 7
Divisible by 10No, remainder 1
Divisible by 11Yes
Divisible by 12No, remainder 1
Divisible by 100No, remainder 1
Collatz (3n + 1) trajectory
Steps to reach 192the total stopping time
Highest value reached3,702,7245× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps731,401 → 2,194,204 → 1,097,102 → 548,551 → 1,645,654 → 822,827 → 2,468,482 → 1,234,241 → 3,702,724 → 1,851,362 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage73,140,100%
731,401% as a decimal7,314.01
731,401% of 100731,401
731,401% of 1,0007,314,010
As a fraction of 100731,401/100
Read another way
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Derived from 731,401
Also reads as
#731401 (colour)
- #731401
- Red
- Dark
- Nearest: Maroon
#731401 is a red with RGB values 115, 20, 1 and HSL 10°, 98%, 23%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Maroon.
Colour values
#731401#731401
HEX#731401
RGBrgb(115, 20, 1)
RGB (0–1)0.451, 0.0784, 0.0039
RGB percentages45.1%, 7.8%, 0.4%
HSLhsl(10, 98.3%, 22.7%)
HSV / HSBhsv(10, 99.1%, 45.1%)
CMYK0%, 82.6%, 99.1%, 54.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,541,761
CSS custom property--colour: #731401;
Brightness & contrast
Relative luminance0.04147WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.48:1
Contrast with white11.48:1WCAG normal text: AAA
Contrast with black1.83:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#8CEBFE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.48:1WCAG large text: AAA
Contrast with black, large text1.83:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#016073
Analogous#730127, #734D01
Triadic#017314, #140173
Split complementary#01734D, #012773
Tetradic#277301, #016073, #4D0173
Tints, shades & saturation
Channel breakdown
R115
G20
B1
Red115 (45.1%)
Green20 (7.8%)
Blue1 (0.4%)
Hue10°
Saturation (HSL)98.28%
Lightness22.75%
Dominant channelRed
Hex per channelR 73 · G 14 · B 01
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