1,321 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 1321 look like?

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

1321 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 1321:


See below for interesting mathematical facts about the number 1321 from the Numbermatics database.

Names of 1321

  • Cardinal: 1321 can be written as One thousand, three hundred twenty-one.

Scientific notation

  • Scientific notation: 1.321 × 103

Factors of 1321

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 1321

Divisors of 1321

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1322
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 1321 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 1320

Bases of 1321

  • Binary: 101001010012
  • Hexadecimal: 0x529
  • Base-36: 10P

Squares and roots of 1321

  • 1321 squared (13212) is 1745041
  • 1321 cubed (13213) is 2305199161
  • The square root of 1321 is 36.3455636907
  • The cube root of 1321 is 10.9723825099

Scales and comparisons

How big is 1321?
  • 1,321 seconds is equal to 22 minutes, 1 second.
  • To count from 1 to 1,321 would take you about twenty-two 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 1321 cubic inches would be around 0.9 feet tall.

Recreational maths with 1321

  • 1321 backwards is 1231
  • The number of decimal digits it has is: 4
  • The sum of 1321's digits is 7
  • More coming soon!

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"Number 1321 - Facts about the integer". Numbermatics.com. 2022. Web. 2 October 2022.

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Numbermatics. (2022). Number 1321 - Facts about the integer. Retrieved 2 October 2022, from https://numbermatics.com/n/1321/

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The information we have on file for 1321 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 1321, math, Factors of 1321, curriculum, school, college, exams, university, Prime factorization of 1321, STEM, science, technology, engineering, physics, economics, calculator, one thousand, three hundred twenty-one.

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