213213304 has 16 divisors (see below), whose sum is σ = 400777920. Its totient is φ = 106339200.

The previous prime is 213213281. The next prime is 213213317. The reversal of 213213304 is 403312312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30024 + ... + 36439.

It is an arithmetic number, because the mean of its divisors is an integer number (25048620).

Almost surely, 2^213213304 is an apocalyptic number.

It is an amenable number.

213213304 is a deficient number, since it is larger than the sum of its proper divisors (187564616).

213213304 is a wasteful number, since it uses less digits than its factorization.

213213304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66870 (or 66866 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 213213304 is about 14601.8253653439. The cubic root of 213213304 is about 597.4085493458.

Adding to 213213304 its reverse (403312312), we get a palindrome (616525616).

The spelling of 213213304 in words is "two hundred thirteen million, two hundred thirteen thousand, three hundred four".