1311562615313 has 2 divisors, whose sum is σ = 1311562615314. Its totient is φ = 1311562615312.

The previous prime is 1311562615277. The next prime is 1311562615333. The reversal of 1311562615313 is 3135162651131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1146252879424 + 165309735889 = 1070632^2 + 406583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311562615313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311562615333) 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, 655781307656 + 655781307657.

It is an arithmetic number, because the mean of its divisors is an integer number (655781307657).

Almost surely, 2^{1311562615313} is an apocalyptic number.

It is an amenable number.

1311562615313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311562615313 is an equidigital number, since it uses as much as digits as its factorization.

1311562615313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 38.

The spelling of 1311562615313 in words is "one trillion, three hundred eleven billion, five hundred sixty-two million, six hundred fifteen thousand, three hundred thirteen".