31655106140 has 48 divisors (see below), whose sum is σ = 76370079744. Its totient is φ = 10796347200.

The previous prime is 31655106127. The next prime is 31655106191. The reversal of 31655106140 is 4160155613.

It is a junction number, because it is equal to n+sod(n) for n = 31655106097 and 31655106106.

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, 565166 + ... + 618645.

It is an arithmetic number, because the mean of its divisors is an integer number (1591043328).

Almost surely, 2^31655106140 is an apocalyptic number.

It is an amenable number.

31655106140 is an abundant number, since it is smaller than the sum of its proper divisors (44714973604).

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

31655106140 is a wasteful number, since it uses less digits than its factorization.

31655106140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184018 (or 1184016 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 31655106140 in words is "thirty-one billion, six hundred fifty-five million, one hundred six thousand, one hundred forty".