31421

Names of 31421

• Cardinal: 31421 can be written as Thirty-one thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 3.1421 × 10⁴

Factors of 31421

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 2430

Divisors of 31421

• Number of divisors d(n): 4
• Complete list of divisors:
  1 13 2417 31421
• Sum of all divisors σ(n): 33852
• Sum of proper divisors (its aliquot sum) s(n): 2431
• 31421 is a deficient number, because the sum of its proper divisors (2431) is less than itself. Its deficiency is 28990

Bases of 31421

• Binary: 111101010111101₂
• Hexadecimal: 0x7ABD
• Base-36: O8T

Squares and roots of 31421

• 31421 squared (31421²) is 987279241
• 31421 cubed (31421³) is 31021301031461
• The square root of 31421 is 177.2596964905
• The cube root of 31421 is 31.5553741715

Scales and comparisons

• 31,421 seconds is equal to 8 hours, 43 minutes, 41 seconds.
• To count from 1 to 31,421 would take you about eight hours.

  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 31421 cubic inches would be around 2.6 feet tall.

Recreational maths with 31421

• 31421 backwards is 12413
• The number of decimal digits it has is: 5
• The sum of 31421's digits is 11
• More coming soon!