213691146 has 16 divisors (see below), whose sum is σ = 427744800. Its totient is φ = 71169968.

The previous prime is 213691141. The next prime is 213691171. The reversal of 213691146 is 641196312.

213691146 is digitally balanced in base 2, 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 (213691141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7116 + ... + 21863.

It is an arithmetic number, because the mean of its divisors is an integer number (26734050).

Almost surely, 2^213691146 is an apocalyptic number.

213691146 is an abundant number, since it is smaller than the sum of its proper divisors (214053654).

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

213691146 is a wasteful number, since it uses less digits than its factorization.

213691146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30213.

The product of its digits is 7776, while the sum is 33.

The square root of 213691146 is about 14618.1786143144. The cubic root of 213691146 is about 597.8545094840.

The spelling of 213691146 in words is "two hundred thirteen million, six hundred ninety-one thousand, one hundred forty-six".