31347574138 has 16 divisors (see below), whose sum is σ = 49870129536. Its totient is φ = 14746541040.

The previous prime is 31347574109. The next prime is 31347574171. The reversal of 31347574138 is 83147574313.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 5583006 + ... + 5588617.

It is an arithmetic number, because the mean of its divisors is an integer number (3116883096).

Almost surely, 2^31347574138 is an apocalyptic number.

31347574138 is a deficient number, since it is larger than the sum of its proper divisors (18522555398).

31347574138 is a wasteful number, since it uses less digits than its factorization.

31347574138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11171709.

The product of its digits is 846720, while the sum is 46.

The spelling of 31347574138 in words is "thirty-one billion, three hundred forty-seven million, five hundred seventy-four thousand, one hundred thirty-eight".