213997912 has 24 divisors (see below), whose sum is σ = 423481500. Its totient is φ = 101366064.

The previous prime is 213997907. The next prime is 213997939. The reversal of 213997912 is 219799312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34162 + ... + 39937.

Almost surely, 2^213997912 is an apocalyptic number.

It is an amenable number.

213997912 is a deficient number, since it is larger than the sum of its proper divisors (209483588).

213997912 is a wasteful number, since it uses less digits than its factorization.

213997912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74143 (or 74120 counting only the distinct ones).

The product of its digits is 61236, while the sum is 43.

The square root of 213997912 is about 14628.6674717829. The cubic root of 213997912 is about 598.1404576054.

The spelling of 213997912 in words is "two hundred thirteen million, nine hundred ninety-seven thousand, nine hundred twelve".