213512955 has 16 divisors (see below), whose sum is σ = 346302240. Its totient is φ = 112313088.

The previous prime is 213512947. The next prime is 213512969. The reversal of 213512955 is 559215312.

It is not a de Polignac number, because 213512955 - 2³ = 213512947 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96400 + ... + 98589.

It is an arithmetic number, because the mean of its divisors is an integer number (21643890).

Almost surely, 2^213512955 is an apocalyptic number.

213512955 is a deficient number, since it is larger than the sum of its proper divisors (132789285).

213512955 is a wasteful number, since it uses less digits than its factorization.

213512955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195070.

The product of its digits is 13500, while the sum is 33.

The square root of 213512955 is about 14612.0825004515. The cubic root of 213512955 is about 597.6882852861.

The spelling of 213512955 in words is "two hundred thirteen million, five hundred twelve thousand, nine hundred fifty-five".