# 1131

## 1,131 is an odd composite number composed of three prime numbers multiplied together.

What does the number 1131 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

1131 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 1131:

### 3 × 13 × 29

See below for interesting mathematical facts about the number 1131 from the Numbermatics database.

### Names of 1131

• Cardinal: 1131 can be written as One thousand, one hundred thirty-one.

### Scientific notation

• Scientific notation: 1.131 × 103

### Factors of 1131

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 45

### Divisors of 1131

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 1680
• Sum of proper divisors (its aliquot sum) s(n): 549
• 1131 is a deficient number, because the sum of its proper divisors (549) is less than itself. Its deficiency is 582

### Bases of 1131

• Binary: 100011010112
• Base-36: VF

### Squares and roots of 1131

• 1131 squared (11312) is 1279161
• 1131 cubed (11313) is 1446731091
• The square root of 1131 is 33.6303434417
• The cube root of 1131 is 10.4188759759

### Scales and comparisons

How big is 1131?
• 1,131 seconds is equal to 18 minutes, 51 seconds.
• To count from 1 to 1,131 would take you about eighteen 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 1131 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1131

• 1131 backwards is 1311
• The number of decimal digits it has is: 4
• The sum of 1131's digits is 6
• More coming soon!