31746979438 has 16 divisors (see below), whose sum is σ = 48410191440. Its totient is φ = 15611023296.

The previous prime is 31746979399. The next prime is 31746979463. The reversal of 31746979438 is 83497964713.

It is a congruent number.

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, 111103 + ... + 275386.

It is an arithmetic number, because the mean of its divisors is an integer number (3025636965).

Almost surely, 2^31746979438 is an apocalyptic number.

31746979438 is a deficient number, since it is larger than the sum of its proper divisors (16663212002).

31746979438 is a wasteful number, since it uses less digits than its factorization.

31746979438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387171.

The product of its digits is 27433728, while the sum is 61.

The spelling of 31746979438 in words is "thirty-one billion, seven hundred forty-six million, nine hundred seventy-nine thousand, four hundred thirty-eight".