213443403304 has 16 divisors (see below), whose sum is σ = 423747933300. Its totient is φ = 100443954432.

The previous prime is 213443403203. The next prime is 213443403319. The reversal of 213443403304 is 403304344312.

It can be written as a sum of positive squares in 2 ways, for example, as 197311863204 + 16131540100 = 444198^2 + 127010^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784718259 + ... + 784718530.

Almost surely, 2^213443403304 is an apocalyptic number.

It is an amenable number.

213443403304 is a deficient number, since it is larger than the sum of its proper divisors (210304529996).

213443403304 is a wasteful number, since it uses less digits than its factorization.

213443403304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569436812 (or 1569436808 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 213443403304 its reverse (403304344312), we get a palindrome (616747747616).

The spelling of 213443403304 in words is "two hundred thirteen billion, four hundred forty-three million, four hundred three thousand, three hundred four".