31406128568 has 16 divisors (see below), whose sum is σ = 59469527160. Its totient is φ = 15547588000.

The previous prime is 31406128541. The next prime is 31406128639. The reversal of 31406128568 is 86582160413.

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, 19433678 + ... + 19435293.

Almost surely, 2^31406128568 is an apocalyptic number.

It is an amenable number.

31406128568 is a deficient number, since it is larger than the sum of its proper divisors (28063398592).

31406128568 is a wasteful number, since it uses less digits than its factorization.

31406128568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38869078 (or 38869074 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 31406128568 in words is "thirty-one billion, four hundred six million, one hundred twenty-eight thousand, five hundred sixty-eight".