213812910 has 48 divisors (see below), whose sum is σ = 588618576. Its totient is φ = 53662464.

The previous prime is 213812891. The next prime is 213812923. The reversal of 213812910 is 19218312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68344 + ... + 71403.

It is an arithmetic number, because the mean of its divisors is an integer number (12262887).

Almost surely, 2^213812910 is an apocalyptic number.

213812910 is an abundant number, since it is smaller than the sum of its proper divisors (374805666).

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

213812910 is a wasteful number, since it uses less digits than its factorization.

213812910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139777 (or 139774 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 213812910 is about 14622.3428355377. The cubic root of 213812910 is about 597.9680430196.

The spelling of 213812910 in words is "two hundred thirteen million, eight hundred twelve thousand, nine hundred ten".