2131130312 has 16 divisors (see below), whose sum is σ = 4022689500. Its totient is φ = 1058413120.

The previous prime is 2131130311. The next prime is 2131130333. The reversal of 2131130312 is 2130311312.

It can be written as a sum of positive squares in 2 ways, for example, as 1985058916 + 146071396 = 44554^2 + 12086^2 .

It is not an unprimeable number, because it can be changed into a prime (2131130311) 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, 892739 + ... + 895122.

Almost surely, 2^2131130312 is an apocalyptic number.

It is an amenable number.

2131130312 is a deficient number, since it is larger than the sum of its proper divisors (1891559188).

2131130312 is a wasteful number, since it uses less digits than its factorization.

2131130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788016 (or 1788012 counting only the distinct ones).

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

The square root of 2131130312 is about 46164.1669696313. The cubic root of 2131130312 is about 1286.8759031638.

Adding to 2131130312 its reverse (2130311312), we get a palindrome (4261441624).

The spelling of 2131130312 in words is "two billion, one hundred thirty-one million, one hundred thirty thousand, three hundred twelve".