213 (number)

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

← 212 213 214 →
← 210 211 212 213 214 215 216 217 218 219 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred thirteen
Ordinal	213th (two hundred thirteenth)
Factorization	3 × 71
Divisors	1, 3, 71, 213
Greek numeral	ΣΙΓ´
Roman numeral	CCXIII, ccxiii
Binary	110101012
Ternary	212203
Senary	5536
Octal	3258
Duodecimal	15912
Hexadecimal	D516

In mathematics

213 and the other permutations of its digits are the only three-digit number whose digit sums and digit products are equal.^[1] It is a member of the quickly-growing Levine sequence, constructed from a triangle of numbers in which each row counts the copies of each value in the row below it.^[2][3]

As the product of the two distinct prime numbers 3 and 71, it is a semiprime, the first of a triple of three consecutive semiprimes 213, 214, and 215.^[4] Its square, 213² = 45369, is one of only 15 known squares that can be represented as a sum of distinct factorials.^[5]

See also

• 213 (disambiguation)