31806609464 has 16 divisors (see below), whose sum is σ = 68157020400. Its totient is φ = 13631404032.

The previous prime is 31806609451. The next prime is 31806609479. The reversal of 31806609464 is 46490660813.

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, 283987529 + ... + 283987640.

It is an arithmetic number, because the mean of its divisors is an integer number (4259813775).

Almost surely, 2^31806609464 is an apocalyptic number.

It is an amenable number.

31806609464 is an abundant number, since it is smaller than the sum of its proper divisors (36350410936).

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

31806609464 is a wasteful number, since it uses less digits than its factorization.

31806609464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567975182 (or 567975178 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 31806609464 in words is "thirty-one billion, eight hundred six million, six hundred nine thousand, four hundred sixty-four".