# 21113

## 21,113 is an odd composite number composed of two prime numbers multiplied together.

What does the number 21113 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

21113 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 21113:

### 43 × 491

See below for interesting mathematical facts about the number 21113 from the Numbermatics database.

### Names of 21113

• Cardinal: 21113 can be written as Twenty-one thousand, one hundred thirteen.

### Scientific notation

• Scientific notation: 2.1113 × 104

### Factors of 21113

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 534

### Divisors of 21113

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 21648
• Sum of proper divisors (its aliquot sum) s(n): 535
• 21113 is a deficient number, because the sum of its proper divisors (535) is less than itself. Its deficiency is 20578

### Bases of 21113

• Binary: 1010010011110012
• Base-36: GAH

### Squares and roots of 21113

• 21113 squared (211132) is 445758769
• 21113 cubed (211133) is 9411304889897
• The square root of 21113 is 145.3031314185
• The cube root of 21113 is 27.6386387339

### Scales and comparisons

How big is 21113?
• 21,113 seconds is equal to 5 hours, 51 minutes, 53 seconds.
• To count from 1 to 21,113 would take you about five hours.

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 21113 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21113

• 21113 backwards is 31112
• The number of decimal digits it has is: 5
• The sum of 21113's digits is 8
• More coming soon!