3112331231 has 2 divisors, whose sum is σ = 3112331232. Its totient is φ = 3112331230.

The previous prime is 3112331177. The next prime is 3112331251. The reversal of 3112331231 is 1321332113.

It is an a-pointer prime, because the next prime (3112331251) can be obtained adding 3112331231 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3112331231 is a prime.

It is a super-2 number, since 2×3112331231² = 19373211382915950722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3112331251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1556165615 + 1556165616.

It is an arithmetic number, because the mean of its divisors is an integer number (1556165616).

Almost surely, 2^3112331231 is an apocalyptic number.

3112331231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3112331231 is an equidigital number, since it uses as much as digits as its factorization.

3112331231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 20.

The square root of 3112331231 is about 55788.2714466043. The cubic root of 3112331231 is about 1460.0305290107.

Adding to 3112331231 its reverse (1321332113), we get a palindrome (4433663344).

The spelling of 3112331231 in words is "three billion, one hundred twelve million, three hundred thirty-one thousand, two hundred thirty-one".