121013987731

Names of 121013987731

• Cardinal: 121013987731 can be written as One hundred twenty-one billion, thirteen million, nine hundred eighty-seven thousand, seven hundred thirty-one.

Scientific notation

• Scientific notation: 1.21013987731 × 10¹¹

Factors of 121013987731

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 916

Divisors of 121013987731

• Number of divisors d(n): 54
• Complete list of divisors:
  1 7 13 19 49 91 133 169 247 637 877 931 1183 1729 3211 6139 8281 11401 12103 16663 22477 42973 79807 116641 148213 157339 216619 558649 769129 816487 1037491 1516333 2816047 5383903 7262437 9998677 10614331 14613451 19712329 37687321 69990739 102294157 129982801 137986303 189974863 489935173 716059099 909879607 1329824041 2469673219 6369157249 9308768287 17287712533 121013987731
• Sum of all divisors σ(n): 160638860340
• Sum of proper divisors (its aliquot sum) s(n): 39624872609
• 121013987731 is a deficient number, because the sum of its proper divisors (39624872609) is less than itself. Its deficiency is 81389115122

Bases of 121013987731

• Binary: 1110000101100111111101110100110010011₂
• Hexadecimal: 0x1C2CFEE993
• Base-36: 1JLCLQJ7

Squares and roots of 121013987731

• 121013987731 squared (121013987731²) is 14644385226558618528361
• 121013987731 cubed (121013987731³) is 1772175454134802317943387329538891
• The square root of 121013987731 is 347870.6479871505
• The cube root of 121013987731 is 4946.2780269261

Scales and comparisons

• 121,013,987,731 seconds is equal to 3,847 years, 45 weeks, 1 day, 20 hours, 35 minutes, 31 seconds.
• To count from 1 to 121,013,987,731 would take you about seven thousand, six hundred ninety-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 121013987731 cubic inches would be around 412.2 feet tall.

Recreational maths with 121013987731

• 121013987731 backwards is 137789310121
• The number of decimal digits it has is: 12
• The sum of 121013987731's digits is 43
• More coming soon!