213402304 has 14 divisors (see below), whose sum is σ = 423470324. Its totient is φ = 106701120.

The previous prime is 213402289. The next prime is 213402313. The reversal of 213402304 is 403204312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1667142 + ... + 1667269.

Almost surely, 2^213402304 is an apocalyptic number.

It is an amenable number.

213402304 is a deficient number, since it is larger than the sum of its proper divisors (210068020).

213402304 is an equidigital number, since it uses as much as digits as its factorization.

213402304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334423 (or 3334413 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 213402304 is about 14608.2957253747. The cubic root of 213402304 is about 597.5850187430.

Adding to 213402304 its reverse (403204312), we get a palindrome (616606616).

The spelling of 213402304 in words is "two hundred thirteen million, four hundred two thousand, three hundred four".