31380805

Names of 31380805

• Cardinal: 31380805 can be written as Thirty-one million, three hundred eighty thousand, eight hundred five.

Scientific notation

• Scientific notation: 3.1380805 × 10⁷

Factors of 31380805

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 6276166

Divisors of 31380805

• Number of divisors d(n): 4
• Complete list of divisors:
  1 5 6276161 31380805
• Sum of all divisors σ(n): 37656972
• Sum of proper divisors (its aliquot sum) s(n): 6276167
• 31380805 is a deficient number, because the sum of its proper divisors (6276167) is less than itself. Its deficiency is 25104638

Bases of 31380805

• Binary: 1110111101101010101000101₂
• Hexadecimal: 0x1DED545
• Base-36: IOLL1

Squares and roots of 31380805

• 31380805 squared (31380805²) is 984754922448025
• 31380805 cubed (31380805³) is 30902402194131595160125
• The square root of 31380805 is 5601.8572812951
• The cube root of 31380805 is 315.4191279747

Scales and comparisons

• 31,380,805 seconds is equal to 51 weeks, 6 days, 4 hours, 53 minutes, 25 seconds.
• To count from 1 to 31,380,805 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 31380805 cubic inches would be around 26.3 feet tall.

Recreational maths with 31380805

• 31380805 backwards is 50808313
• The number of decimal digits it has is: 8
• The sum of 31380805's digits is 28
• More coming soon!