213365155 has 16 divisors (see below), whose sum is σ = 269932320. Its totient is φ = 161457408.

The previous prime is 213365123. The next prime is 213365161. The reversal of 213365155 is 551563312.

It is a cyclic number.

It is not a de Polignac number, because 213365155 - 2⁵ = 213365123 is a prime.

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, 79719 + ... + 82351.

It is an arithmetic number, because the mean of its divisors is an integer number (16870770).

Almost surely, 2^213365155 is an apocalyptic number.

213365155 is a deficient number, since it is larger than the sum of its proper divisors (56567165).

213365155 is a wasteful number, since it uses less digits than its factorization.

213365155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510.

The product of its digits is 13500, while the sum is 31.

The square root of 213365155 is about 14607.0241664755. The cubic root of 213365155 is about 597.5503409322.

The spelling of 213365155 in words is "two hundred thirteen million, three hundred sixty-five thousand, one hundred fifty-five".