213555304 has 16 divisors (see below), whose sum is σ = 414224100. Its totient is φ = 103095552.

The previous prime is 213555301. The next prime is 213555313. The reversal of 213555304 is 403555312.

It can be written as a sum of positive squares in 2 ways, for example, as 192376900 + 21178404 = 13870^2 + 4602^2 .

It is not an unprimeable number, because it can be changed into a prime (213555301) 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 in 3 ways as a sum of consecutive naturals, for example, 460017 + ... + 460480.

Almost surely, 2^213555304 is an apocalyptic number.

It is an amenable number.

213555304 is a deficient number, since it is larger than the sum of its proper divisors (200668796).

213555304 is a wasteful number, since it uses less digits than its factorization.

213555304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920532 (or 920528 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 213555304 is about 14613.5315375853. The cubic root of 213555304 is about 597.7277986229.

The spelling of 213555304 in words is "two hundred thirteen million, five hundred fifty-five thousand, three hundred four".