21323715831

Names of 21323715831

• Cardinal: 21323715831 can be written as Twenty-one billion, three hundred twenty-three million, seven hundred fifteen thousand, eight hundred thirty-one.

Scientific notation

• Scientific notation: 2.1323715831 × 10¹⁰

Factors of 21323715831

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 398

Divisors of 21323715831

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 11 27 31 33 81 93 99 243 279 297 341 353 729 837 891 1023 1059 2187 2511 2673 3069 3177 3883 6561 7533 8019 9207 9531 10943 11649 19683 22599 24057 27621 28593 32829 34947 59049 67797 72171 82863 85779 98487 104841 120373 177147 203391 216513 248589 257337 295461 314523 361119 610173 649539 745767 772011 886383 943569 1083357 1830519 1948617 2237301 2316033 2659149 2830707 3250071 5491557 6711903 6948099 7977447 8492121 9750213 20135709 20844297 23932341 25476363 29250639 60407127 62532891 71797023 76429089 87751917 215391069 229287267 263255751 646173207 687861801 789767253 1938519621 2369301759 7107905277 21323715831
• Sum of all divisors σ(n): 36120913920
• Sum of proper divisors (its aliquot sum) s(n): 14797198089
• 21323715831 is a deficient number, because the sum of its proper divisors (14797198089) is less than itself. Its deficiency is 6526517742

Bases of 21323715831

• Binary: 10011110110111111100001010011110111₂
• Hexadecimal: 0x4F6FE14F7
• Base-36: 9SNL8FR

Squares and roots of 21323715831

• 21323715831 squared (21323715831²) is 454700856841240020561
• 21323715831 cubed (21323715831³) is 9695911859394814480107361201191
• The square root of 21323715831 is 146026.4216879945
• The cube root of 21323715831 is 2773.0282595269

Scales and comparisons

• 21,323,715,831 seconds is equal to 678 years, 1 week, 3 days, 6 hours, 23 minutes, 51 seconds.
• To count from 1 to 21,323,715,831 would take you about one thousand, three hundred fifty-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 21323715831 cubic inches would be around 231.1 feet tall.

Recreational maths with 21323715831

• 21323715831 backwards is 13851732312
• The number of decimal digits it has is: 11
• The sum of 21323715831's digits is 36
• More coming soon!