31779131940

Names of 31779131940

• Cardinal: 31779131940 can be written as Thirty-one billion, seven hundred seventy-nine million, one hundred thirty-one thousand, nine hundred forty.

Scientific notation

• Scientific notation: 3.177913194 × 10¹⁰

Factors of 31779131940

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4105884

Divisors of 31779131940

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 30 36 43 45 60 86 90 129 172 180 215 258 387 430 516 645 774 860 1290 1548 1935 2580 3870 7740 4105831 8211662 12317493 16423324 20529155 24634986 36952479 41058310 49269972 61587465 73904958 82116620 123174930 147809916 176550733 184762395 246349860 353101466 369524790 529652199 706202932 739049580 882753665 1059304398 1588956597 1765507330 2118608796 2648260995 3177913194 3531014660 5296521990 6355826388 7944782985 10593043980 15889565970 31779131940
• Sum of all divisors σ(n): 98638507968
• Sum of proper divisors (its aliquot sum) s(n): 66859376028
• 31779131940 is an abundant number, because the sum of its proper divisors (66859376028) is greater than itself. Its abundance is 35080244088

Bases of 31779131940

• Binary: 11101100110001011110001001000100100₂
• Hexadecimal: 0x7662F1224
• Base-36: ELKH350

Squares and roots of 31779131940

• 31779131940 squared (31779131940²) is 1009913226859928163600
• 31779131940 cubed (31779131940³) is 32094165684332809009966305384000
• The square root of 31779131940 is 178267.0242641639
• The cube root of 31779131940 is 3167.4809384993

Scales and comparisons

• 31,779,131,940 seconds is equal to 1,010 years, 24 weeks, 6 days, 39 minutes.
• To count from 1 to 31,779,131,940 would take you about two thousand and twenty 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 31779131940 cubic inches would be around 264 feet tall.

Recreational maths with 31779131940

• 31779131940 backwards is 04913197713
• 31779131940 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31779131940's digits is 45
• More coming soon!