31109420792 has 32 divisors (see below), whose sum is σ = 60364440000. Its totient is φ = 15012643968.

The previous prime is 31109420779. The next prime is 31109420833. The reversal of 31109420792 is 29702490113.

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, 623009 + ... + 671087.

It is an arithmetic number, because the mean of its divisors is an integer number (1886388750).

Almost surely, 2^31109420792 is an apocalyptic number.

It is an amenable number.

31109420792 is a deficient number, since it is larger than the sum of its proper divisors (29255019208).

31109420792 is a wasteful number, since it uses less digits than its factorization.

31109420792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50903 (or 50899 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 31109420792 in words is "thirty-one billion, one hundred nine million, four hundred twenty thousand, seven hundred ninety-two".