213399388 has 12 divisors (see below), whose sum is σ = 373665712. Its totient is φ = 106637760.

The previous prime is 213399379. The next prime is 213399413. The reversal of 213399388 is 883993312.

It is a congruent number.

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, 7245 + ... + 21892.

Almost surely, 2^213399388 is an apocalyptic number.

It is an amenable number.

213399388 is a deficient number, since it is larger than the sum of its proper divisors (160266324).

213399388 is a wasteful number, since it uses less digits than its factorization.

213399388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30972 (or 30970 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 213399388 is about 14608.1959187300. The cubic root of 213399388 is about 597.5822968638.

The spelling of 213399388 in words is "two hundred thirteen million, three hundred ninety-nine thousand, three hundred eighty-eight".