21317131

Names of 21317131

• Cardinal: 21317131 can be written as Twenty-one million, three hundred seventeen thousand, one hundred thirty-one.

Scientific notation

• Scientific notation: 2.1317131 × 10⁷

Factors of 21317131

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 7433

Divisors of 21317131

• Number of divisors d(n): 8
• Complete list of divisors:
  1 11 271 2981 7151 78661 1937921 21317131
• Sum of all divisors σ(n): 23344128
• Sum of proper divisors (its aliquot sum) s(n): 2026997
• 21317131 is a deficient number, because the sum of its proper divisors (2026997) is less than itself. Its deficiency is 19290134

Bases of 21317131

• Binary: 1010001010100011000001011₂
• Hexadecimal: 0x145460B
• Base-36: COWEJ

Squares and roots of 21317131

• 21317131 squared (21317131²) is 454420074071161
• 21317131 cubed (21317131³) is 9686932248004642359091
• The square root of 21317131 is 4617.0478663319
• The cube root of 21317131 is 277.2742790171

Scales and comparisons

• 21,317,131 seconds is equal to 35 weeks, 1 day, 17 hours, 25 minutes, 31 seconds.
• To count from 1 to 21,317,131 would take you about six days!

  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 21317131 cubic inches would be around 23.1 feet tall.

Recreational maths with 21317131

• 21317131 backwards is 13171312
• The number of decimal digits it has is: 8
• The sum of 21317131's digits is 19
• More coming soon!