31977391005

Names of 31977391005

• Cardinal: 31977391005 can be written as Thirty-one billion, nine hundred seventy-seven million, three hundred ninety-one thousand and five.

Scientific notation

• Scientific notation: 3.1977391005 × 10¹⁰

Factors of 31977391005

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 11279518

Divisors of 31977391005

• Number of divisors d(n): 40
• Complete list of divisors:
  1 3 5 7 9 15 21 27 35 45 63 81 105 135 189 315 405 567 945 2835 11279503 33838509 56397515 78956521 101515527 169192545 236869563 304546581 394782605 507577635 710608689 913639743 1184347815 1522732905 2131826067 3553043445 4568198715 6395478201 10659130335 31977391005
• Sum of all divisors σ(n): 65511359232
• Sum of proper divisors (its aliquot sum) s(n): 33533968227
• 31977391005 is an abundant number, because the sum of its proper divisors (33533968227) is greater than itself. Its abundance is 1556577222

Bases of 31977391005

• Binary: 11101110010000000000100001110011101₂
• Hexadecimal: 0x77200439D
• Base-36: EOUIGT9

Squares and roots of 31977391005

• 31977391005 squared (31977391005²) is 1022553535486654910025
• 31977391005 cubed (31977391005³) is 32698594227801907017372519325125
• The square root of 31977391005 is 178822.2329717421
• The cube root of 31977391005 is 3174.0542289755

Scales and comparisons

• 31,977,391,005 seconds is equal to 1,016 years, 40 weeks, 4 days, 16 hours, 36 minutes, 45 seconds.
• To count from 1 to 31,977,391,005 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 31977391005 cubic inches would be around 264.5 feet tall.

Recreational maths with 31977391005

• 31977391005 backwards is 50019377913
• 31977391005 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31977391005's digits is 45
• More coming soon!