31945303728

Names of 31945303728

• Cardinal: 31945303728 can be written as Thirty-one billion, nine hundred forty-five million, three hundred three thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 3.1945303728 × 10¹⁰

Factors of 31945303728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 17064817

Divisors of 31945303728

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 36 39 48 52 72 78 104 117 144 156 208 234 312 468 624 936 1872 17064799 34129598 51194397 68259196 102388794 136518392 153583191 204777588 221842387 273036784 307166382 409555176 443684774 614332764 665527161 819110352 887369548 1228665528 1331054322 1774739096 1996581483 2457331056 2662108644 3549478192 3993162966 5324217288 7986325932 10648434576 15972651864 31945303728
• Sum of all divisors σ(n): 96279601600
• Sum of proper divisors (its aliquot sum) s(n): 64334297872
• 31945303728 is an abundant number, because the sum of its proper divisors (64334297872) is greater than itself. Its abundance is 32388994144

Bases of 31945303728

• Binary: 11101110000000101101010011010110000₂
• Hexadecimal: 0x77016A6B0
• Base-36: EOBEQ40

Squares and roots of 31945303728

• 31945303728 squared (31945303728²) is 1020502430274170697984
• 31945303728 cubed (31945303728³) is 32600260090270525260416637284352
• The square root of 31945303728 is 178732.4920880363
• The cube root of 31945303728 is 3172.9922198639

Scales and comparisons

• 31,945,303,728 seconds is equal to 1,015 years, 39 weeks, 4 days, 7 hours, 28 minutes, 48 seconds.
• To count from 1 to 31,945,303,728 would take you about two thousand and thirty-one 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 31945303728 cubic inches would be around 264.4 feet tall.

Recreational maths with 31945303728

• 31945303728 backwards is 82730354913
• The number of decimal digits it has is: 11
• The sum of 31945303728's digits is 45
• More coming soon!