# 531

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

What does the number 531 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

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

## Prime factorization of 531:

### 32 × 59

(3 × 3 × 59)

See below for interesting mathematical facts about the number 531 from the Numbermatics database.

### Names of 531

• Cardinal: 531 can be written as Five hundred thirty-one.

### Scientific notation

• Scientific notation: 5.31 × 102

### Factors of 531

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 62

### Divisors of 531

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 780
• Sum of proper divisors (its aliquot sum) s(n): 249
• 531 is a deficient number, because the sum of its proper divisors (249) is less than itself. Its deficiency is 282

### Bases of 531

• Binary: 10000100112
• Base-36: ER

### Squares and roots of 531

• 531 squared (5312) is 281961
• 531 cubed (5313) is 149721291
• The square root of 531 is 23.0434372437
• The cube root of 531 is 8.0977588679

### Scales and comparisons

How big is 531?
• 531 seconds is equal to 8 minutes, 51 seconds.
• To count from 1 to 531 would take you about four 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 531 cubic inches would be around 0.7 feet tall.

### Recreational maths with 531

• 531 backwards is 135
• 531 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 531's digits is 9
• More coming soon!