21308931071

Names of 21308931071

• Cardinal: 21308931071 can be written as Twenty-one billion, three hundred eight million, nine hundred thirty-one thousand and seventy-one.

Scientific notation

• Scientific notation: 2.1308931071 × 10¹⁰

Factors of 21308931071

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 843960

Divisors of 21308931071

• Number of divisors d(n): 4
• Complete list of divisors:
  1 26053 817907 21308931071
• Sum of all divisors σ(n): 21309775032
• Sum of proper divisors (its aliquot sum) s(n): 843961
• 21308931071 is a deficient number, because the sum of its proper divisors (843961) is less than itself. Its deficiency is 21308087110

Bases of 21308931071

• Binary: 10011110110000111000111101111111111₂
• Hexadecimal: 0x4F61C7BFF
• Base-36: 9SESCFZ

Squares and roots of 21308931071

• 21308931071 squared (21308931071²) is 454070543388629207041
• 21308931071 cubed (21308931071³) is 9675757910439814538014056870911
• The square root of 21308931071 is 145975.7893316559
• The cube root of 21308931071 is 2772.3872199651

Scales and comparisons

• 21,308,931,071 seconds is equal to 677 years, 29 weeks, 3 hours, 31 minutes, 11 seconds.
• To count from 1 to 21,308,931,071 would take you about one thousand, three hundred fifty-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 21308931071 cubic inches would be around 231 feet tall.

Recreational maths with 21308931071

• 21308931071 backwards is 17013980312
• The number of decimal digits it has is: 11
• The sum of 21308931071's digits is 35
• More coming soon!