31129140

Names of 31129140

• Cardinal: 31129140 can be written as Thirty-one million, one hundred twenty-nine thousand, one hundred forty.

Scientific notation

• Scientific notation: 3.112914 × 10⁷

Factors of 31129140

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 695

Divisors of 31129140

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 137 140 210 274 411 420 541 548 685 822 959 1082 1370 1623 1644 1918 2055 2164 2705 2740 2877 3246 3787 3836 4110 4795 5410 5754 6492 7574 8115 8220 9590 10820 11361 11508 14385 15148 16230 18935 19180 22722 28770 32460 37870 45444 56805 57540 74117 75740 113610 148234 222351 227220 296468 370585 444702 518819 741170 889404 1037638 1111755 1482340 1556457 2075276 2223510 2594095 3112914 4447020 5188190 6225828 7782285 10376380 15564570 31129140
• Sum of all divisors σ(n): 100525824
• Sum of proper divisors (its aliquot sum) s(n): 69396684
• 31129140 is an abundant number, because the sum of its proper divisors (69396684) is greater than itself. Its abundance is 38267544

Bases of 31129140

• Binary: 1110110101111111000110100₂
• Hexadecimal: 0x1DAFE34
• Base-36: IJ7EC

Squares and roots of 31129140

• 31129140 squared (31129140²) is 969023357139600
• 31129140 cubed (31129140³) is 30164863747668607944000
• The square root of 31129140 is 5579.3494244399
• The cube root of 31129140 is 314.5736737041

Scales and comparisons

• 31,129,140 seconds is equal to 51 weeks, 3 days, 6 hours, 59 minutes.
• To count from 1 to 31,129,140 would take you about twenty-five weeks!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 31129140 cubic inches would be around 26.2 feet tall.

Recreational maths with 31129140

• 31129140 backwards is 04192113
• 31129140 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 31129140's digits is 21
• More coming soon!