31347535428 has 36 divisors (see below), whose sum is σ = 86443204848. Its totient is φ = 9499253040.

The previous prime is 31347535391. The next prime is 31347535481. The reversal of 31347535428 is 82453574313.

31347535428 is a `hidden beast` number, since 3 + 1 + 34 + 75 + 3 + 542 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39579826 + ... + 39580617.

Almost surely, 2^31347535428 is an apocalyptic number.

It is an amenable number.

31347535428 is an abundant number, since it is smaller than the sum of its proper divisors (55095669420).

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

31347535428 is a wasteful number, since it uses less digits than its factorization.

31347535428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79160464 (or 79160459 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 31347535428 in words is "thirty-one billion, three hundred forty-seven million, five hundred thirty-five thousand, four hundred twenty-eight".