31108374140 has 48 divisors (see below), whose sum is σ = 67454601984. Its totient is φ = 12038438400.

The previous prime is 31108374127. The next prime is 31108374217. The reversal of 31108374140 is 4147380113.

It is a junction number, because it is equal to n+sod(n) for n = 31108374097 and 31108374106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3391160 + ... + 3400320.

It is an arithmetic number, because the mean of its divisors is an integer number (1405304208).

Almost surely, 2^31108374140 is an apocalyptic number.

It is an amenable number.

31108374140 is an abundant number, since it is smaller than the sum of its proper divisors (36346227844).

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

31108374140 is a wasteful number, since it uses less digits than its factorization.

31108374140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14678 (or 14676 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 31108374140 in words is "thirty-one billion, one hundred eight million, three hundred seventy-four thousand, one hundred forty".