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Number

131,000

  • Positive
  • Even
  • Composite
  • 6 digits

131,000 is an even 6-digit integer and a composite number. It has 32 divisors and a digital root of 5.

Number properties

ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value131,000
Digit count6
Digit sum5
Digital root5repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberYesdivisible by its own digit sum

Factors & divisors

Prime factorisation2^3 × 5^3 × 131
Distinct prime factors32, 5, 131
Number of divisors32
Sum of divisors σ(n)308,880
Aliquot sum177,880sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)52,000integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 131, 200, 250, 262, 500, 524, 655, 1,000, 1,048, 1,310, 2,620, 3,275, 5,240, 6,550, 13,100, 16,375, 26,200, 32,750, 65,500, 131,00032 in total

Arithmetic

Previous number130,999
Next number131,001
Double262,000
Half65,500
Square17,161,000,000
Cube2,248,091,000,000,000
Square root361.939221417≈irrational, shown to 9 decimal places
Cube root50.787530781≈
Negation-131,000
Reciprocal0.0000076336≈

Representations

Decimal131,000
Binary1111111111011100017 bits
Octal377670
Hexadecimal1FFB8
Base 362T2W
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsone hundred and thirty-one thousand
Ordinalone hundred and thirty-one thousandth
Scientific notation1.31 × 10^5
Engineering notation131 × 10^3

Nearest landmarks

Next prime131,009+9
Previous prime130,987−13
Distance to nearest prime9
Nearest square below130,321
Nearest square above131,044

Powers & multiples

131,000 to the power 217,161,000,000
131,000 to the power 32,248,091,000,000,000
131,000 to the power 4294,499,921,000,000,000,000
131,000 to the power 538,579,489,651,000,000,000,000,000
First ten multiples131,000, 262,000, 393,000, 524,000, 655,000, 786,000, 917,000, 1,048,000, 1,179,000, 1,310,000
Powers of twoBetween 2^16 (65,536) and 2^17 (131,072)

Divisibility tests

Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4Yes
Divisible by 5Yes
Divisible by 6No, remainder 2
Divisible by 7No, remainder 2
Divisible by 8Yes
Divisible by 9No, remainder 5
Divisible by 10Yes
Divisible by 11No, remainder 1
Divisible by 12No, remainder 8
Divisible by 100Yes

Collatz (3n + 1) trajectory

Steps to reach 1131the total stopping time
Highest value reached131,000
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps131,000 → 65,500 → 32,750 → 16,375 → 49,126 → 24,563 → 73,690 → 36,845 → 110,536 → 55,268 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage13,100,000%
131,000% as a decimal1,310
131,000% of 100131,000
131,000% of 1,0001,310,000
As a fraction of 100131,000/100

Read another way

As seconds1 day, 12 hours and 23 minutes
As bytes127.93 KiB
As a 24-bit colour#01FFB8

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Neighbouring numbers

Nearby primes

Also reads as

#131000 (colour)

  • #131000
  • Yellow
  • Dark
  • Nearest: Black

#131000 is a yellow with RGB values 19, 16, 0 and HSL 51°, 100%, 4%. It is a dark colour, so white text on it reaches 19.1:1 contrast (AAA for normal text). The nearest named colour is Black.

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Colour values

#131000#131000
HEX#131000
RGBrgb(19, 16, 0)
RGB (0–1)0.0745, 0.0627, 0
RGB percentages7.5%, 6.3%, 0%
HSLhsl(50.5, 100%, 3.7%)
HSV / HSBhsv(50.5, 100%, 7.5%)
CMYK0%, 15.8%, 100%, 92.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,249,280
CSS custom property--colour: #131000;

Brightness & contrast

Relative luminance0.00509WCAG 2.x, 0 is black and 1 is white
Perceived brightness16.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.06:1
Contrast with white19.06:1WCAG normal text: AAA
Contrast with black1.1:1WCAG normal text: Fail
Greyscale equivalent#0F0F0F
Inverted#ECEFFF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#130F00no red cones; affects about 1% of men; ΔE 0.7 from the original
Deuteranopia#141000no green cones; the most common form, about 1% of men; ΔE 0.5 from the original
Tritanopia#160E0Cno blue cones; rare, and affects men and women equally; ΔE 6.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.06:1WCAG large text: AAA
Contrast with black, large text1.1:1WCAG large text: Fail

Named colours

Black · ΔE 8.4Dark slate grey · ΔE 30.5Dim grey · ΔE 40.4Dark olivegreen · ΔE 47.8Gray · ΔE 49.5Slate grey · ΔE 51.3
Nearest named CSS colourBlack (#000000)ΔE 8.35, clearly different but related
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#000313
Analogous#130700, #0C1300
Triadic#001310, #100013
Split complementary#000C13, #070013
Tetradic#001307, #000313, #13000C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DFBC00
Lighter +30%#AC9100
Lighter +20%#796600
Lighter +10%#463B00
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#131000
Less saturated −25%#110E02

Channel breakdown

R19
G16
B0
Red19 (7.5%)
Green16 (6.3%)
Blue0 (0%)
Hue50.53°
Saturation (HSL)100%
Lightness3.73%
Dominant channelRed
Hex per channelR 13 · G 10 · B 00

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Every value on this page was computed from “131000” by Nerdulator’s number engine. Nothing here was retrieved from a database of answers or written by a model.