1,381 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 1381 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

1381 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 1381:


See below for interesting mathematical facts about the number 1381 from the Numbermatics database.

Names of 1381

  • Cardinal: 1381 can be written as One thousand, three hundred eighty-one.

Scientific notation

  • Scientific notation: 1.381 × 103

Factors of 1381

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 1381

Divisors of 1381

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1382
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 1381 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 1380

Bases of 1381

  • Binary: 101011001012
  • Hexadecimal: 0x565
  • Base-36: 12D

Squares and roots of 1381

  • 1381 squared (13812) is 1907161
  • 1381 cubed (13813) is 2633789341
  • The square root of 1381 is 37.1618083521
  • The cube root of 1381 is 11.1360513839

Scales and comparisons

How big is 1381?
  • 1,381 seconds is equal to 23 minutes, 1 second.
  • To count from 1 to 1,381 would take you about twenty-three 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 1381 cubic inches would be around 0.9 feet tall.

Recreational maths with 1381

  • 1381 backwards is 1831
  • The number of decimal digits it has is: 4
  • The sum of 1381's digits is 13
  • More coming soon!

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"Number 1381 - Facts about the integer". Numbermatics.com. 2024. Web. 24 May 2024.

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Numbermatics. (2024). Number 1381 - Facts about the integer. Retrieved 24 May 2024, from https://numbermatics.com/n/1381/

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Numbermatics. 2024. "Number 1381 - Facts about the integer". https://numbermatics.com/n/1381/

The information we have on file for 1381 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!

Keywords: Divisors of 1381, math, Factors of 1381, curriculum, school, college, exams, university, Prime factorization of 1381, STEM, science, technology, engineering, physics, economics, calculator, one thousand, three hundred eighty-one.

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