1312331223523 has 2 divisors, whose sum is σ = 1312331223524. Its totient is φ = 1312331223522.

The previous prime is 1312331223443. The next prime is 1312331223571. The reversal of 1312331223523 is 3253221332131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312331223523 - 2¹⁷ = 1312331092451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312331223023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656165611761 + 656165611762.

It is an arithmetic number, because the mean of its divisors is an integer number (656165611762).

Almost surely, 2^{1312331223523} is an apocalyptic number.

1312331223523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312331223523 is an equidigital number, since it uses as much as digits as its factorization.

1312331223523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 31.

Adding to 1312331223523 its reverse (3253221332131), we get a palindrome (4565552555654).

The spelling of 1312331223523 in words is "one trillion, three hundred twelve billion, three hundred thirty-one million, two hundred twenty-three thousand, five hundred twenty-three".