213731736492 has 24 divisors (see below), whose sum is σ = 499619114176. Its totient is φ = 71113665168.

The previous prime is 213731736487. The next prime is 213731736521. The reversal of 213731736492 is 294637137312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16274038 + ... + 16287165.

Almost surely, 2^213731736492 is an apocalyptic number.

It is an amenable number.

213731736492 is an abundant number, since it is smaller than the sum of its proper divisors (285887377684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213731736492 is a wasteful number, since it uses less digits than its factorization.

213731736492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32561757 (or 32561755 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 48.

The spelling of 213731736492 in words is "two hundred thirteen billion, seven hundred thirty-one million, seven hundred thirty-six thousand, four hundred ninety-two".