21131268513
21,131,268,513 is an odd composite number composed of five prime numbers multiplied together.
21131268513 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21131268513:
3 × 19 × 312 × 41 × 972
(3 × 19 × 31 × 31 × 41 × 97 × 97)See below for interesting mathematical facts about the number 21131268513 from the Numbermatics database.
Names of 21131268513
- Cardinal: 21131268513 can be written as Twenty-one billion, one hundred thirty-one million, two hundred sixty-eight thousand, five hundred thirteen.
Scientific notation
- Scientific notation: 2.1131268513 × 1010
Factors of 21131268513
Divisors of 21131268513
- Number of divisors d(n): 72
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Complete list of divisors:
1 3 19 31 41 57 93 97 123 291 589 779 961 1271 1767 1843 2337 2883 3007 3813 3977 5529 9021 9409 11931 18259 24149 28227 39401 54777 57133 72447 75563 93217 118203 123287 171399 178771 226689 279651 291679 369861 385769 536313 748619 875037 1157307 1771123 2245857 2342453 3821897 5313369 5541901 7027359 7329611 9042049 11465691 11958839 16625703 21988833 27126147 35876517 72616043 171798931 217848129 227217941 370724009 515396793 681653823 1112172027 7043756171 21131268513
- Sum of all divisors σ(n): 31719915360
- Sum of proper divisors (its aliquot sum) s(n): 10588646847
- 21131268513 is a deficient number, because the sum of its proper divisors (10588646847) is less than itself. Its deficiency is 10542621666
Bases of 21131268513
- Binary: 100111010111000010110010001101000012
- Hexadecimal: 0x4EB8591A1
- Base-36: 9PH0F4X
Squares and roots of 21131268513
- 21131268513 squared (211312685132) is 446530508968505231169
- 21131268513 cubed (211312685133) is 9435756084260038700077275881697
-
The
square root of 21131268513 is 145365.9812782895 -
The
cube root of 21131268513 is 2764.6608093591
Scales and comparisons
How big is 21131268513?- 21,131,268,513 seconds is equal to 671 years, 47 weeks, 1 day, 20 hours, 48 minutes, 33 seconds.
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To count from 1 to 21,131,268,513 would take you about one thousand, three hundred forty-three 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 21131268513 cubic inches would be around 230.4 feet tall.
Recreational maths with 21131268513
- 21131268513 backwards is 31586213112
- The number of decimal digits it has is: 11
- The sum of 21131268513's digits is 33
- More coming soon!
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