# 213 (number)

| ||||
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Cardinal | two hundred thirteen | |||

Ordinal |
213th (two hundred and thirteenth) | |||

Factorization | 3 × 71 | |||

Divisors | 1, 3, 71, 213 | |||

Roman numeral | CCXIII | |||

Binary |
11010101_{2} | |||

Ternary |
21220_{3} | |||

Quaternary |
3111_{4} | |||

Quinary |
1323_{5} | |||

Senary |
553_{6} | |||

Octal |
325_{8} | |||

Duodecimal |
159_{12} | |||

Hexadecimal |
D5_{16} | |||

Vigesimal |
AD_{20} | |||

Base 36 |
5X_{36} |

**213** (**two hundred [and] thirteen**) is the number following 212 and preceding 214.

It is the smallest of a triple consecutive numbers that are products of two distinct prime numbers: 213 = 3 × 71, 214 = 2 × 107, and 215 = 5 × 43.^{[1]} Its square is a sum of distinct factorials: 213^{2} = 45369 = 1! + 2! + 3! + 7! + 8!.^{[2]}

## See also

- 213, a hip hop music group
- Area code 213
- 213 Lilaea a main belt asteroid.

## References

- ↑ "Sloane's A039833 : Smallest of three consecutive squarefree numbers n, n+1, n+2 of the form p*q where p and q are primes".
*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation.. - ↑ "Sloane's A014597 : Numbers n such that n^2 is a sum of distinct factorials".
*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation..

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