31681039872

Names of 31681039872

• Cardinal: 31681039872 can be written as Thirty-one billion, six hundred eighty-one million, thirty-nine thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 3.1681039872 × 10¹⁰

Factors of 31681039872

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 20625682

Divisors of 31681039872

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 512 768 1536 20625677 41251354 61877031 82502708 123754062 165005416 247508124 330010832 495016248 660021664 990032496 1320043328 1980064992 2640086656 3960129984 5280173312 7920259968 10560346624 15840519936 31681039872
• Sum of all divisors σ(n): 84400274376
• Sum of proper divisors (its aliquot sum) s(n): 52719234504
• 31681039872 is an abundant number, because the sum of its proper divisors (52719234504) is greater than itself. Its abundance is 21038194632

Bases of 31681039872

• Binary: 11101100000010101100100111000000000₂
• Hexadecimal: 0x760564E00
• Base-36: EJY2MTC

Squares and roots of 31681039872

• 31681039872 squared (31681039872²) is 1003688287371253776384
• 31681039872 cubed (31681039872³) is 31797888651268084956252075982848
• The square root of 31681039872 is 177991.6848394889
• The cube root of 31681039872 is 3164.2185776543

Scales and comparisons

• 31,681,039,872 seconds is equal to 1,007 years, 18 weeks, 4 days, 16 hours, 51 minutes, 12 seconds.
• To count from 1 to 31,681,039,872 would take you about two thousand and fourteen 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 31681039872 cubic inches would be around 263.7 feet tall.

Recreational maths with 31681039872

• 31681039872 backwards is 27893018613
• 31681039872 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31681039872's digits is 48
• More coming soon!