213303904 has 24 divisors (see below), whose sum is σ = 458119368. Its totient is φ = 96956160.

The previous prime is 213303889. The next prime is 213303943. The reversal of 213303904 is 409303312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302637 + ... + 303340.

It is an arithmetic number, because the mean of its divisors is an integer number (19088307).

Almost surely, 2^213303904 is an apocalyptic number.

It is an amenable number.

213303904 is an abundant number, since it is smaller than the sum of its proper divisors (244815464).

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

213303904 is a wasteful number, since it uses less digits than its factorization.

213303904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605998 (or 605990 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 213303904 is about 14604.9273877004. The cubic root of 213303904 is about 597.4931556203.

The spelling of 213303904 in words is "two hundred thirteen million, three hundred three thousand, nine hundred four".