31491071638

Names of 31491071638

• Cardinal: 31491071638 can be written as Thirty-one billion, four hundred ninety-one million, seventy-one thousand, six hundred thirty-eight.

Scientific notation

• Scientific notation: 3.1491071638 × 10¹⁰

Factors of 31491071638

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 829

Divisors of 31491071638

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 13 26 29 41 58 82 127 169 254 338 377 533 617 754 1066 1189 1234 1651 2378 3302 3683 4901 5207 6929 7366 8021 9802 10414 13858 15457 16042 17893 21463 25297 30914 35786 42926 47879 50594 67691 78359 95758 104273 135382 151003 156718 200941 208546 232609 302006 328861 401882 465218 622427 657722 733613 879983 1018667 1244854 1467226 1759966 1963039 2037334 2272411 3023917 3212719 3926078 4275193 4544822 6047834 6425438 8550386 9536969 13242671 19073938 25519507 26485342 29541343 41765347 51039014 59082686 83530694 93168851 123980597 186337702 247961194 384037459 542949511 768074918 1085899022 1211195063 2422390126 15745535819 31491071638
• Sum of all divisors σ(n): 54719400960
• Sum of proper divisors (its aliquot sum) s(n): 23228329322
• 31491071638 is a deficient number, because the sum of its proper divisors (23228329322) is less than itself. Its deficiency is 8262742316

Bases of 31491071638

• Binary: 11101010101000000111001111010010110₂
• Hexadecimal: 0x755039E96
• Base-36: EGSYYDY

Squares and roots of 31491071638

• 31491071638 squared (31491071638²) is 991687592909648003044
• 31491071638 cubed (31491071638³) is 31229305030833506125222246066072
• The square root of 31491071638 is 177457.2388999671
• The cube root of 31491071638 is 3157.8813857383

Scales and comparisons

• 31,491,071,638 seconds is equal to 1,001 years, 16 weeks, 3 days, 23 hours, 53 minutes, 58 seconds.
• To count from 1 to 31,491,071,638 would take you about two thousand and two years!

  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 31491071638 cubic inches would be around 263.2 feet tall.

Recreational maths with 31491071638

• 31491071638 backwards is 83617019413
• The number of decimal digits it has is: 11
• The sum of 31491071638's digits is 43
• More coming soon!