213502304 has 12 divisors (see below), whose sum is σ = 420332724. Its totient is φ = 106751136.

The previous prime is 213502279. The next prime is 213502309. The reversal of 213502304 is 403205312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213502309) by changing a digit.

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 as a sum of consecutive naturals, namely, 3335942 + ... + 3336005.

It is an arithmetic number, because the mean of its divisors is an integer number (35027727).

Almost surely, 2^213502304 is an apocalyptic number.

It is an amenable number.

213502304 is a deficient number, since it is larger than the sum of its proper divisors (206830420).

213502304 is an equidigital number, since it uses as much as digits as its factorization.

213502304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671957 (or 6671949 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 213502304 is about 14611.7180372467. The cubic root of 213502304 is about 597.6783466483.

Adding to 213502304 its reverse (403205312), we get a palindrome (616707616).

The spelling of 213502304 in words is "two hundred thirteen million, five hundred two thousand, three hundred four".