2131320112 has 30 divisors (see below), whose sum is σ = 4227758052. Its totient is φ = 1040862816.

The previous prime is 2131320077. The next prime is 2131320119. The reversal of 2131320112 is 2110231312.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (2131320119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6438 + ... + 65605.

Almost surely, 2^2131320112 is an apocalyptic number.

It is an amenable number.

2131320112 is a deficient number, since it is larger than the sum of its proper divisors (2096437940).

2131320112 is an equidigital number, since it uses as much as digits as its factorization.

2131320112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72137 (or 72088 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2131320112 is about 46166.2226308369. Note that the first 3 decimals coincide. The cubic root of 2131320112 is about 1286.9141053945.

Adding to 2131320112 its reverse (2110231312), we get a palindrome (4241551424).

The spelling of 2131320112 in words is "two billion, one hundred thirty-one million, three hundred twenty thousand, one hundred twelve".