31389405957

Names of 31389405957

• Cardinal: 31389405957 can be written as Thirty-one billion, three hundred eighty-nine million, four hundred five thousand, nine hundred fifty-seven.

Scientific notation

• Scientific notation: 3.1389405957 × 10¹⁰

Factors of 31389405957

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 13125

Divisors of 31389405957

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 7 9 13 21 27 39 63 91 117 189 273 351 819 1061 2457 3183 7427 9549 12041 13793 22281 28647 36123 41379 66843 84287 96551 108369 124137 156533 200529 252861 289653 325107 372411 469599 758583 868959 1095731 1408797 2275749 2606877 3287193 4226391 9861579 12775501 29584737 38326503 89428507 114979509 166081513 268285521 344938527 498244539 804856563 1162570591 1494733617 2414569689 3487711773 4484200851 10463135319 31389405957
• Sum of all divisors σ(n): 57292945920
• Sum of proper divisors (its aliquot sum) s(n): 25903539963
• 31389405957 is a deficient number, because the sum of its proper divisors (25903539963) is less than itself. Its deficiency is 5485865994

Bases of 31389405957

• Binary: 11101001110111101000101001100000101₂
• Hexadecimal: 0x74EF45305
• Base-36: EF4FWN9

Squares and roots of 31389405957

• 31389405957 squared (31389405957²) is 985294806333347085849
• 31389405957 cubed (31389405957³) is 30927818663321126344297191002493
• The square root of 31389405957 is 177170.5561231889
• The cube root of 31389405957 is 3154.4794238891

Scales and comparisons

• 31,389,405,957 seconds is equal to 998 years, 4 weeks, 3 days, 7 hours, 25 minutes, 57 seconds.
• To count from 1 to 31,389,405,957 would take you about one thousand, nine hundred ninety-six 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 31389405957 cubic inches would be around 262.9 feet tall.

Recreational maths with 31389405957

• 31389405957 backwards is 75950498313
• The number of decimal digits it has is: 11
• The sum of 31389405957's digits is 54
• More coming soon!