31981238121

Names of 31981238121

• Cardinal: 31981238121 can be written as Thirty-one billion, nine hundred eighty-one million, two hundred thirty-eight thousand, one hundred twenty-one.

Scientific notation

• Scientific notation: 3.1981238121 × 10¹⁰

Factors of 31981238121

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1052

Divisors of 31981238121

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 19 21 49 57 79 133 147 193 237 399 553 579 751 931 1351 1501 1659 2253 2793 3667 3871 4053 4503 5257 9457 10507 11001 11613 14269 15247 15771 25669 28371 31521 36799 42807 45741 59329 73549 77007 99883 106729 110397 144943 177987 179683 220647 289693 299649 320187 415303 434829 539049 699181 747103 869079 1014601 1127251 1245909 2027851 2097543 2241309 2753917 2907121 3043803 3381753 6083553 7102207 7890757 8261751 8721363 11450497 14194957 19277419 21306621 23672271 34351491 42584871 55235299 57832257 80153479 134941933 165705897 217559443 240460437 404825799 561074353 652678329 1522916101 1683223059 4568748303 10660412707 31981238121
• Sum of all divisors σ(n): 53219942400
• Sum of proper divisors (its aliquot sum) s(n): 21238704279
• 31981238121 is a deficient number, because the sum of its proper divisors (21238704279) is less than itself. Its deficiency is 10742533842

Bases of 31981238121

• Binary: 11101110010001110101111011101101001₂
• Hexadecimal: 0x7723AF769
• Base-36: EOWSX9L

Squares and roots of 31981238121

• 31981238121 squared (31981238121²) is 1022799591752103610641
• 31981238121 cubed (31981238121³) is 32710397293885613174573690445561
• The square root of 31981238121 is 178832.9894650313
• The cube root of 31981238121 is 3174.1815112497

Scales and comparisons

• 31,981,238,121 seconds is equal to 1,016 years, 47 weeks, 5 hours, 15 minutes, 21 seconds.
• To count from 1 to 31,981,238,121 would take you about two thousand and thirty-three 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 31981238121 cubic inches would be around 264.5 feet tall.

Recreational maths with 31981238121

• 31981238121 backwards is 12183218913
• The number of decimal digits it has is: 11
• The sum of 31981238121's digits is 39
• More coming soon!