213352251 has 16 divisors (see below), whose sum is σ = 325323264. Its totient is φ = 121834944.

The previous prime is 213352241. The next prime is 213352289. The reversal of 213352251 is 152253312.

It is a happy number.

It is not a de Polignac number, because 213352251 - 2⁹ = 213351739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213352241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46026 + ... + 50448.

It is an arithmetic number, because the mean of its divisors is an integer number (20332704).

Almost surely, 2^213352251 is an apocalyptic number.

213352251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213352251 is a deficient number, since it is larger than the sum of its proper divisors (111971013).

213352251 is a wasteful number, since it uses less digits than its factorization.

213352251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730.

The product of its digits is 1800, while the sum is 24.

The square root of 213352251 is about 14606.5824544963. The cubic root of 213352251 is about 597.5382943775.

The spelling of 213352251 in words is "two hundred thirteen million, three hundred fifty-two thousand, two hundred fifty-one".