2131031112 has 64 divisors (see below), whose sum is σ = 6092359680. Its totient is φ = 608496192.

The previous prime is 2131031069. The next prime is 2131031137. The reversal of 2131031112 is 2111301312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2131031091 and 2131031100.

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, 397683 + ... + 403005.

It is an arithmetic number, because the mean of its divisors is an integer number (95193120).

Almost surely, 2^2131031112 is an apocalyptic number.

It is an amenable number.

2131031112 is an abundant number, since it is smaller than the sum of its proper divisors (3961328568).

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

2131031112 is a wasteful number, since it uses less digits than its factorization.

2131031112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7722 (or 7718 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2131031112 is about 46163.0925307220. The cubic root of 2131031112 is about 1286.8559356580.

Adding to 2131031112 its reverse (2111301312), we get a palindrome (4242332424).

The spelling of 2131031112 in words is "two billion, one hundred thirty-one million, thirty-one thousand, one hundred twelve".