31423872

Names of 31423872

• Cardinal: 31423872 can be written as Thirty-one million, four hundred twenty-three thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 3.1423872 × 10⁷

Factors of 31423872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 156

Divisors of 31423872

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 12 16 19 24 32 38 48 57 59 64 73 76 96 114 118 128 146 152 177 192 219 228 236 292 304 354 384 438 456 472 584 608 708 876 912 944 1121 1168 1216 1387 1416 1752 1824 1888 2242 2336 2432 2774 2832 3363 3504 3648 3776 4161 4307 4484 4672 5548 5664 6726 7008 7296 7552 8322 8614 8968 9344 11096 11328 12921 13452 14016 16644 17228 17936 22192 22656 25842 26904 28032 33288 34456 35872 44384 51684 53808 66576 68912 71744 81833 88768 103368 107616 133152 137824 143488 163666 177536 206736 215232 245499 266304 275648 327332 413472 430464 490998 532608 551296 654664 826944 981996 1309328 1653888 1963992 2618656 3927984 5237312 7855968 10474624 15711936 31423872
• Sum of all divisors σ(n): 90576000
• Sum of proper divisors (its aliquot sum) s(n): 59152128
• 31423872 is an abundant number, because the sum of its proper divisors (59152128) is greater than itself. Its abundance is 27728256

Bases of 31423872

• Binary: 1110111110111110110000000₂
• Hexadecimal: 0x1DF7D80
• Base-36: IPITC

Squares and roots of 31423872

• 31423872 squared (31423872²) is 987459731472384
• 31423872 cubed (31423872³) is 31029808206942566350848
• The square root of 31423872 is 5605.6999562943
• The cube root of 31423872 is 315.5633556963

Scales and comparisons

• 31,423,872 seconds is equal to 51 weeks, 6 days, 16 hours, 51 minutes, 12 seconds.
• To count from 1 to 31,423,872 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 31423872 cubic inches would be around 26.3 feet tall.

Recreational maths with 31423872

• 31423872 backwards is 27832413
• The number of decimal digits it has is: 8
• The sum of 31423872's digits is 30
• More coming soon!