# 631

## 631 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 631 look like?

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

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

## Prime factorization of 631:

### 631

See below for interesting mathematical facts about the number 631 from the Numbermatics database.

### Names of 631

• Cardinal: 631 can be written as Six hundred thirty-one.

### Scientific notation

• Scientific notation: 6.31 × 102

### Factors of 631

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 631

### Divisors of 631

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 632
• Sum of proper divisors (its aliquot sum) s(n): 1
• 631 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 630

### Bases of 631

• Binary: 10011101112
• Base-36: HJ

### Squares and roots of 631

• 631 squared (6312) is 398161
• 631 cubed (6313) is 251239591
• The square root of 631 is 25.1197133741
• The cube root of 631 is 8.5771522617

### Scales and comparisons

How big is 631?
• 631 seconds is equal to 10 minutes, 31 seconds.
• To count from 1 to 631 would take you about five 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 631 cubic inches would be around 0.7 feet tall.

### Recreational maths with 631

• 631 backwards is 136
• The number of decimal digits it has is: 3
• The sum of 631's digits is 10
• More coming soon!