31139409

Names of 31139409

• Cardinal: 31139409 can be written as Thirty-one million, one hundred thirty-nine thousand, four hundred nine.

Scientific notation

• Scientific notation: 3.1139409 × 10⁷

Factors of 31139409

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 16760

Divisors of 31139409

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 7 21 89 267 623 1869 16661 49983 116627 349881 1482829 4448487 10379803 31139409
• Sum of all divisors σ(n): 47986560
• Sum of proper divisors (its aliquot sum) s(n): 16847151
• 31139409 is a deficient number, because the sum of its proper divisors (16847151) is less than itself. Its deficiency is 14292258

Bases of 31139409

• Binary: 1110110110010011001010001₂
• Hexadecimal: 0x1DB2651
• Base-36: IJFBL

Squares and roots of 31139409

• 31139409 squared (31139409²) is 969662792869281
• 31139409 cubed (31139409³) is 30194726299238824594929
• The square root of 31139409 is 5580.2696171421
• The cube root of 31139409 is 314.6082608241

Scales and comparisons

• 31,139,409 seconds is equal to 51 weeks, 3 days, 9 hours, 50 minutes, 9 seconds.
• To count from 1 to 31,139,409 would take you about twenty-five weeks!

  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 31139409 cubic inches would be around 26.2 feet tall.

Recreational maths with 31139409

• 31139409 backwards is 90493113
• The number of decimal digits it has is: 8
• The sum of 31139409's digits is 30
• More coming soon!