2131031312 has 20 divisors (see below), whose sum is σ = 4150496256. Its totient is φ = 1059935520.

The previous prime is 2131031297. The next prime is 2131031321. The reversal of 2131031312 is 2131301312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345608 + ... + 351719.

Almost surely, 2^2131031312 is an apocalyptic number.

It is an amenable number.

2131031312 is a deficient number, since it is larger than the sum of its proper divisors (2019464944).

2131031312 is a wasteful number, since it uses less digits than its factorization.

2131031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697526 (or 697520 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2131031312 is about 46163.0946969546. The cubic root of 2131031312 is about 1286.8559759157.

Adding to 2131031312 its reverse (2131301312), we get a palindrome (4262332624).

The spelling of 2131031312 in words is "two billion, one hundred thirty-one million, thirty-one thousand, three hundred twelve".