213115970 has 32 divisors (see below), whose sum is σ = 404913600. Its totient is φ = 80536896.

The previous prime is 213115963. The next prime is 213115997. The reversal of 213115970 is 79511312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78272 + ... + 80948.

It is an arithmetic number, because the mean of its divisors is an integer number (12653550).

Almost surely, 2^213115970 is an apocalyptic number.

213115970 is a deficient number, since it is larger than the sum of its proper divisors (191797630).

213115970 is a wasteful number, since it uses less digits than its factorization.

213115970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 213115970 is about 14598.4920454135. The cubic root of 213115970 is about 597.3176278550.

The spelling of 213115970 in words is "two hundred thirteen million, one hundred fifteen thousand, nine hundred seventy".