# 213

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

What does the number 213 look like?

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

213 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 213:

### 3 × 71

See below for interesting mathematical facts about the number 213 from the Numbermatics database.

### Names of 213

• Cardinal: 213 can be written as Two hundred thirteen.

### Scientific notation

• Scientific notation: 2.13 × 102

### Factors of 213

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 74

### Divisors of 213

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 288
• Sum of proper divisors (its aliquot sum) s(n): 75
• 213 is a deficient number, because the sum of its proper divisors (75) is less than itself. Its deficiency is 138

### Bases of 213

• Binary: 110101012
• Hexadecimal: 0xD5
• Base-36: 5X

### Squares and roots of 213

• 213 squared (2132) is 45369
• 213 cubed (2133) is 9663597
• The square root of 213 is 14.5945195193
• The cube root of 213 is 5.9720926199

### Scales and comparisons

How big is 213?
• 213 seconds is equal to 3 minutes, 33 seconds.
• To count from 1 to 213 would take you about forty-six seconds.

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 213 cubic inches would be around 0.5 feet tall.

### Recreational maths with 213

• 213 backwards is 312
• The number of decimal digits it has is: 3
• The sum of 213's digits is 6
• More coming soon!

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The information we have on file for 213 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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