31513500112 has 40 divisors (see below), whose sum is σ = 61650331904. Its totient is φ = 15604475904.

The previous prime is 31513500107. The next prime is 31513500113. The reversal of 31513500112 is 21100531513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31513500113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665743 + ... + 711505.

Almost surely, 2^31513500112 is an apocalyptic number.

It is an amenable number.

31513500112 is a deficient number, since it is larger than the sum of its proper divisors (30136831792).

31513500112 is a wasteful number, since it uses less digits than its factorization.

31513500112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46187 (or 46181 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The spelling of 31513500112 in words is "thirty-one billion, five hundred thirteen million, five hundred thousand, one hundred twelve".