3131112112 has 20 divisors (see below), whose sum is σ = 6076381176. Its totient is φ = 1563013760.

The previous prime is 3131112109. The next prime is 3131112113. The reversal of 3131112112 is 2112111313.

It is a happy number.

3131112112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (3131112113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148714 + ... + 168457.

Almost surely, 2^3131112112 is an apocalyptic number.

It is an amenable number.

3131112112 is a deficient number, since it is larger than the sum of its proper divisors (2945269064).

3131112112 is a wasteful number, since it uses less digits than its factorization.

3131112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317796 (or 317790 counting only the distinct ones).

The product of its digits is 36, while the sum is 16.

The square root of 3131112112 is about 55956.3411241300. The cubic root of 3131112112 is about 1462.9614176289.

Adding to 3131112112 its reverse (2112111313), we get a palindrome (5243223425).

The spelling of 3131112112 in words is "three billion, one hundred thirty-one million, one hundred twelve thousand, one hundred twelve".