31381975912

Names of 31381975912

• Cardinal: 31381975912 can be written as Thirty-one billion, three hundred eighty-one million, nine hundred seventy-five thousand, nine hundred twelve.

Scientific notation

• Scientific notation: 3.1381975912 × 10¹⁰

Factors of 31381975912

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 891

Divisors of 31381975912

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 7 8 14 28 49 56 98 149 196 298 392 596 733 1043 1192 1466 2086 2932 4172 5131 5864 7301 8344 10262 14602 20524 29204 35917 41048 58408 71834 109217 143668 218434 287336 436868 537289 764519 873736 1074578 1529038 2149156 3058076 3761023 4298312 5351633 6116152 7522046 10703266 15044092 21406532 26327161 30088184 42813064 52654322 80056061 105308644 160112122 210617288 320224244 560392427 640448488 1120784854 2241569708 3922746989 4483139416 7845493978 15690987956 31381975912
• Sum of all divisors σ(n): 69001449750
• Sum of proper divisors (its aliquot sum) s(n): 37619473838
• 31381975912 is an abundant number, because the sum of its proper divisors (37619473838) is greater than itself. Its abundance is 6237497926

Bases of 31381975912

• Binary: 11101001110100000101111001101101000₂
• Hexadecimal: 0x74E82F368
• Base-36: EF00NL4

Squares and roots of 31381975912

• 31381975912 squared (31381975912²) is 984828412141348231744
• 31381975912 cubed (31381975912³) is 30905861507272998547794001750528
• The square root of 31381975912 is 177149.5862597483
• The cube root of 31381975912 is 3154.2305100395

Scales and comparisons

• 31,381,975,912 seconds is equal to 997 years, 44 weeks, 1 day, 7 hours, 31 minutes, 52 seconds.
• To count from 1 to 31,381,975,912 would take you about one thousand, nine hundred ninety-five 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 31381975912 cubic inches would be around 262.9 feet tall.

Recreational maths with 31381975912

• 31381975912 backwards is 21957918313
• 31381975912 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31381975912's digits is 49
• More coming soon!