31012013232 has 30 divisors (see below), whose sum is σ = 86790565212. Its totient is φ = 10337337696.

The previous prime is 31012013209. The next prime is 31012013261. The reversal of 31012013232 is 23231021013.

31012013232 is a `hidden beast` number, since 310 + 120 + 1 + 3 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107680458 + ... + 107680745.

Almost surely, 2^31012013232 is an apocalyptic number.

It is an amenable number.

31012013232 is an abundant number, since it is smaller than the sum of its proper divisors (55778551980).

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

31012013232 is a wasteful number, since it uses less digits than its factorization.

31012013232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215361217 (or 215361208 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31012013232 its reverse (23231021013), we get a palindrome (54243034245).

The spelling of 31012013232 in words is "thirty-one billion, twelve million, thirteen thousand, two hundred thirty-two".