# 23

## 23 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 23 look like?

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

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

## Prime factorization of 23:

### 23

See below for interesting mathematical facts about the number 23 from the Numbermatics database.

### Names of 23

• Cardinal: 23 can be written as Twenty-three.

### Scientific notation

• Scientific notation: 2.3 × 101

### Factors of 23

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 23

### Divisors of 23

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 24
• Sum of proper divisors (its aliquot sum) s(n): 1
• 23 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 22

### Bases of 23

• Binary: 101112
• Base-36: N

### Squares and roots of 23

• 23 squared (232) is 529
• 23 cubed (233) is 12167
• The square root of 23 is 4.7958315233
• The cube root of 23 is 2.8438669799

### Scales and comparisons

How big is 23?
• A cube with a volume of 23 cubic inches would be around 0.2 feet tall.

### Recreational maths with 23

• 23 backwards is 32
• The number of decimal digits it has is: 2
• The sum of 23's digits is 5
• More coming soon!