3112321231 has 2 divisors, whose sum is σ = 3112321232. Its totient is φ = 3112321230.

The previous prime is 3112321217. The next prime is 3112321271. The reversal of 3112321231 is 1321232113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3112321231 - 2⁹ = 3112320719 is a prime.

It is a super-2 number, since 2×3112321231² = 19373086889866710722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3112321199 and 3112321208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3112321271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1556160615 + 1556160616.

It is an arithmetic number, because the mean of its divisors is an integer number (1556160616).

Almost surely, 2^3112321231 is an apocalyptic number.

3112321231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3112321231 is an equidigital number, since it uses as much as digits as its factorization.

3112321231 is an evil number, because the sum of its binary digits is even.

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

The square root of 3112321231 is about 55788.1818219594. The cubic root of 3112321231 is about 1460.0289653039.

Adding to 3112321231 its reverse (1321232113), we get a palindrome (4433553344).

The spelling of 3112321231 in words is "three billion, one hundred twelve million, three hundred twenty-one thousand, two hundred thirty-one".