213255345 has 16 divisors (see below), whose sum is σ = 343305792. Its totient is φ = 113037120.

The previous prime is 213255313. The next prime is 213255353. The reversal of 213255345 is 543552312.

It is not a de Polignac number, because 213255345 - 2⁵ = 213255313 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41166 + ... + 46055.

It is an arithmetic number, because the mean of its divisors is an integer number (21456612).

Almost surely, 2^213255345 is an apocalyptic number.

It is an amenable number.

213255345 is a deficient number, since it is larger than the sum of its proper divisors (130050447).

213255345 is a wasteful number, since it uses less digits than its factorization.

213255345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87392.

The product of its digits is 18000, while the sum is 30.

The square root of 213255345 is about 14603.2648746779. The cubic root of 213255345 is about 597.4478120650.

The spelling of 213255345 in words is "two hundred thirteen million, two hundred fifty-five thousand, three hundred forty-five".