2112131312 has 10 divisors (see below), whose sum is σ = 4092254448. Its totient is φ = 1056065648.

The previous prime is 2112131303. The next prime is 2112131317. The reversal of 2112131312 is 2131312112.

It is a super-2 number, since 2×2112131312² = 8922197358261682688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112131317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66004088 + ... + 66004119.

Almost surely, 2^2112131312 is an apocalyptic number.

It is an amenable number.

2112131312 is a deficient number, since it is larger than the sum of its proper divisors (1980123136).

2112131312 is a wasteful number, since it uses less digits than its factorization.

2112131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132008215 (or 132008209 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 2112131312 is about 45957.9298054210. The cubic root of 2112131312 is about 1283.0403215829.

Adding to 2112131312 its reverse (2131312112), we get a palindrome (4243443424).

The spelling of 2112131312 in words is "two billion, one hundred twelve million, one hundred thirty-one thousand, three hundred twelve".