2981

2,981 is an odd composite number composed of two prime numbers multiplied together.

What does the number 2981 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

2981 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 2981:

11 × 271

See below for interesting mathematical facts about the number 2981 from the Numbermatics database.


Names of 2981

  • Cardinal: 2981 can be written as Two thousand, nine hundred eighty-one.

Scientific notation

  • Scientific notation: 2.981 × 103

Factors of 2981

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 282

Divisors of 2981

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 3264
  • Sum of proper divisors (its aliquot sum) s(n): 283
  • 2981 is a deficient number, because the sum of its proper divisors (283) is less than itself. Its deficiency is 2698

Bases of 2981

  • Binary: 1011101001012
  • Hexadecimal: 0xBA5
  • Base-36: 2AT

Squares and roots of 2981

  • 2981 squared (29812) is 8886361
  • 2981 cubed (29813) is 26490242141
  • The square root of 2981 is 54.5985347789
  • The cube root of 2981 is 14.3919837069

Scales and comparisons

How big is 2981?
  • 2,981 seconds is equal to 49 minutes, 41 seconds.
  • To count from 1 to 2,981 would take you about forty-nine minutes.

    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 2981 cubic inches would be around 1.2 feet tall.

Recreational maths with 2981

  • 2981 backwards is 1892
  • The number of decimal digits it has is: 4
  • The sum of 2981's digits is 20
  • More coming soon!

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The information we have on file for 2981 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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