31213

31,213 is an odd composite number composed of two prime numbers multiplied together.

What does the number 31213 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 10 divisors.

31213 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of ten divisors.

Prime factorization of 31213:

7⁴ × 13

(7 × 7 × 7 × 7 × 13)

See below for interesting mathematical facts about the number 31213 from the Numbermatics database.

Names of 31213

Cardinal: 31213 can be written as Thirty-one thousand, two hundred thirteen.

Scientific notation

Scientific notation: 3.1213 × 10⁴

Factors of 31213

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 5
Sum of prime factors: 20

Divisors of 31213

Number of divisors d(n): 10
Complete list of divisors:
1 7 13 49 91 343 637 2401 4459 31213
Sum of all divisors σ(n): 39214
Sum of proper divisors (its aliquot sum) s(n): 8001
31213 is a deficient number, because the sum of its proper divisors (8001) is less than itself. Its deficiency is 23212

Bases of 31213

Binary: 111100111101101₂
Hexadecimal: 0x79ED
Base-36: O31

Squares and roots of 31213

31213 squared (31213²) is 974251369
31213 cubed (31213³) is 30409307980597
The square root of 31213 is 176.6720124977
The cube root of 31213 is 31.4855901169

Scales and comparisons

How big is 31213?

31,213 seconds is equal to 8 hours, 40 minutes, 13 seconds.
To count from 1 to 31,213 would take you about eight 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 31213 cubic inches would be around 2.6 feet tall.

Recreational maths with 31213

31213 is the same when its digits are reversed! That makes it a palindromic number.
The number of decimal digits it has is: 5
The sum of 31213's digits is 10
More coming soon!

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The information we have on file for 31213 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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