2131304312 has 64 divisors (see below), whose sum is σ = 4252953600. Its totient is φ = 999648000.

The previous prime is 2131304311. The next prime is 2131304387. The reversal of 2131304312 is 2134031312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131304311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819487 + ... + 1820657.

It is an arithmetic number, because the mean of its divisors is an integer number (66452400).

Almost surely, 2^2131304312 is an apocalyptic number.

It is an amenable number.

2131304312 is a deficient number, since it is larger than the sum of its proper divisors (2121649288).

2131304312 is a wasteful number, since it uses less digits than its factorization.

2131304312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2131304312 is about 46166.0515097404. The cubic root of 2131304312 is about 1286.9109253164.

Adding to 2131304312 its reverse (2134031312), we get a palindrome (4265335624).

The spelling of 2131304312 in words is "two billion, one hundred thirty-one million, three hundred four thousand, three hundred twelve".