31445

Names of 31445

• Cardinal: 31445 can be written as Thirty-one thousand, four hundred forty-five.

Scientific notation

• Scientific notation: 3.1445 × 10⁴

Factors of 31445

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 355

Divisors of 31445

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 19 95 331 1655 6289 31445
• Sum of all divisors σ(n): 39840
• Sum of proper divisors (its aliquot sum) s(n): 8395
• 31445 is a deficient number, because the sum of its proper divisors (8395) is less than itself. Its deficiency is 23050

Bases of 31445

• Binary: 111101011010101₂
• Hexadecimal: 0x7AD5
• Base-36: O9H

Squares and roots of 31445

• 31445 squared (31445²) is 988788025
• 31445 cubed (31445³) is 31092439446125
• The square root of 31445 is 177.3273808523
• The cube root of 31445 is 31.5634063393

Scales and comparisons

• 31,445 seconds is equal to 8 hours, 44 minutes, 5 seconds.
• To count from 1 to 31,445 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 31445 cubic inches would be around 2.6 feet tall.

Recreational maths with 31445

• 31445 backwards is 54413
• The number of decimal digits it has is: 5
• The sum of 31445's digits is 17
• More coming soon!