# 1213

## 1,213 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 1213 look like?

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

1213 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 1213:

### 1213

See below for interesting mathematical facts about the number 1213 from the Numbermatics database.

### Names of 1213

• Cardinal: 1213 can be written as One thousand, two hundred thirteen.

### Scientific notation

• Scientific notation: 1.213 × 103

### Factors of 1213

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 1213

### Divisors of 1213

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 1214
• Sum of proper divisors (its aliquot sum) s(n): 1
• 1213 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 1212

### Bases of 1213

• Binary: 100101111012
• Base-36: XP

### Squares and roots of 1213

• 1213 squared (12132) is 1471369
• 1213 cubed (12133) is 1784770597
• The square root of 1213 is 34.8281495345
• The cube root of 1213 is 10.6648217295

### Scales and comparisons

How big is 1213?
• 1,213 seconds is equal to 20 minutes, 13 seconds.
• To count from 1 to 1,213 would take you about twenty 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 1213 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1213

• 1213 backwards is 3121
• The number of decimal digits it has is: 4
• The sum of 1213's digits is 7
• More coming soon!