213118188 has 24 divisors (see below), whose sum is σ = 526527792. Its totient is φ = 66860544.

The previous prime is 213118153. The next prime is 213118189. The reversal of 213118188 is 881811312.

213118188 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213118189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522145 + ... + 522552.

It is an arithmetic number, because the mean of its divisors is an integer number (21938658).

Almost surely, 2^213118188 is an apocalyptic number.

It is an amenable number.

213118188 is an abundant number, since it is smaller than the sum of its proper divisors (313409604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213118188 is a wasteful number, since it uses less digits than its factorization.

213118188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044721 (or 1044719 counting only the distinct ones).

The product of its digits is 3072, while the sum is 33.

The square root of 213118188 is about 14598.5680119661. The cubic root of 213118188 is about 597.3197000381.

The spelling of 213118188 in words is "two hundred thirteen million, one hundred eighteen thousand, one hundred eighty-eight".