131312720

Names of 131312720

• Cardinal: 131312720 can be written as One hundred thirty-one million, three hundred twelve thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.3131272 × 10⁸

Factors of 131312720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 21342

Divisors of 131312720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 28 35 40 44 55 56 70 77 80 88 110 112 140 154 176 220 280 308 385 440 560 616 770 880 1232 1540 3080 6160 21317 42634 85268 106585 149219 170536 213170 234487 298438 341072 426340 468974 596876 746095 852680 937948 1172435 1193752 1492190 1641409 1705360 1875896 2344870 2387504 2984380 3282818 3751792 4689740 5968760 6565636 8207045 9379480 11937520 13131272 16414090 18758960 26262544 32828180 65656360 131312720
• Sum of all divisors σ(n): 380654208
• Sum of proper divisors (its aliquot sum) s(n): 249341488
• 131312720 is an abundant number, because the sum of its proper divisors (249341488) is greater than itself. Its abundance is 118028768

Bases of 131312720

• Binary: 111110100111010110001010000₂
• Hexadecimal: 0x7D3AC50
• Base-36: 266HJK

Squares and roots of 131312720

• 131312720 squared (131312720²) is 17243030433798400
• 131312720 cubed (131312720³) is 2264229227304847835648000
• The square root of 131312720 is 11459.1762356637
• The cube root of 131312720 is 508.2791158395

Scales and comparisons

• 131,312,720 seconds is equal to 4 years, 9 weeks, 19 hours, 45 minutes, 20 seconds.
• To count from 1 to 131,312,720 would take you about 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 131312720 cubic inches would be around 42.4 feet tall.

Recreational maths with 131312720

• 131312720 backwards is 027213131
• 131312720 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 131312720's digits is 20
• More coming soon!