18031

Names of 18031

• Cardinal: 18031 can be written as Eighteen thousand and thirty-one.

Scientific notation

• Scientific notation: 1.8031 × 10⁴

Factors of 18031

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 105

Divisors of 18031

• Number of divisors d(n): 8
• Complete list of divisors:
  1 13 19 73 247 949 1387 18031
• Sum of all divisors σ(n): 20720
• Sum of proper divisors (its aliquot sum) s(n): 2689
• 18031 is a deficient number, because the sum of its proper divisors (2689) is less than itself. Its deficiency is 15342

Bases of 18031

• Binary: 100011001101111₂
• Hexadecimal: 0x466F
• Base-36: DWV

Squares and roots of 18031

• 18031 squared (18031²) is 325116961
• 18031 cubed (18031³) is 5862183923791
• The square root of 18031 is 134.2795591295
• The cube root of 18031 is 26.2224503103

Scales and comparisons

• 18,031 seconds is equal to 5 hours, 31 seconds.
• To count from 1 to 18,031 would take you about five 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 18031 cubic inches would be around 2.2 feet tall.

Recreational maths with 18031

• 18031 backwards is 13081
• 18031 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 18031's digits is 13
• More coming soon!