2131131312 has 60 divisors (see below), whose sum is σ = 5969577744. Its totient is φ = 709737600.

The previous prime is 2131131307. The next prime is 2131131329. The reversal of 2131131312 is 2131311312.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170062 + ... + 182162.

Almost surely, 2^2131131312 is an apocalyptic number.

It is an amenable number.

2131131312 is an abundant number, since it is smaller than the sum of its proper divisors (3838446432).

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

2131131312 is a wasteful number, since it uses less digits than its factorization.

2131131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13338 (or 13329 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 2131131312 is about 46164.1778005414. The cubic root of 2131131312 is about 1286.8761044460.

Adding to 2131131312 its reverse (2131311312), we get a palindrome (4262442624).

The spelling of 2131131312 in words is "two billion, one hundred thirty-one million, one hundred thirty-one thousand, three hundred twelve".