213304504 has 32 divisors (see below), whose sum is σ = 458017920. Its totient is φ = 91228896.

The previous prime is 213304493. The next prime is 213304513. The reversal of 213304504 is 405403312.

213304504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213304504² = 90997622853372032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25647 + ... + 32929.

It is an arithmetic number, because the mean of its divisors is an integer number (14313060).

Almost surely, 2^213304504 is an apocalyptic number.

It is an amenable number.

213304504 is an abundant number, since it is smaller than the sum of its proper divisors (244713416).

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

213304504 is a wasteful number, since it uses less digits than its factorization.

213304504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7819 (or 7815 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 213304504 is about 14604.9479286987. The cubic root of 213304504 is about 597.4937158469.

Adding to 213304504 its reverse (405403312), we get a palindrome (618707816).

The spelling of 213304504 in words is "two hundred thirteen million, three hundred four thousand, five hundred four".