1312224232331 has 2 divisors, whose sum is σ = 1312224232332. Its totient is φ = 1312224232330.

The previous prime is 1312224232279. The next prime is 1312224232337. The reversal of 1312224232331 is 1332324222131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312224232331 - 2²² = 1312220038027 is a prime.

It is a super-2 number, since 2×1312224232331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312224232294 and 1312224232303.

It is not a weakly prime, because it can be changed into another prime (1312224232337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656112116165 + 656112116166.

It is an arithmetic number, because the mean of its divisors is an integer number (656112116166).

Almost surely, 2^{1312224232331} is an apocalyptic number.

1312224232331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312224232331 is an equidigital number, since it uses as much as digits as its factorization.

1312224232331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

Adding to 1312224232331 its reverse (1332324222131), we get a palindrome (2644548454462).

The spelling of 1312224232331 in words is "one trillion, three hundred twelve billion, two hundred twenty-four million, two hundred thirty-two thousand, three hundred thirty-one".