2112323131 has 2 divisors, whose sum is σ = 2112323132. Its totient is φ = 2112323130.

The previous prime is 2112323107. The next prime is 2112323153. The reversal of 2112323131 is 1313232112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112323131 is a prime.

It is a super-2 number, since 2×2112323131² = 8923818019515286322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112323099 and 2112323108.

It is not a weakly prime, because it can be changed into another prime (2112323231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056161565 + 1056161566.

It is an arithmetic number, because the mean of its divisors is an integer number (1056161566).

Almost surely, 2^2112323131 is an apocalyptic number.

2112323131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112323131 is an equidigital number, since it uses as much as digits as its factorization.

2112323131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 2112323131 is about 45960.0166557846. The cubic root of 2112323131 is about 1283.0791613495.

Adding to 2112323131 its reverse (1313232112), we get a palindrome (3425555243).

The spelling of 2112323131 in words is "two billion, one hundred twelve million, three hundred twenty-three thousand, one hundred thirty-one".