1313433376391 has 2 divisors, whose sum is σ = 1313433376392. Its totient is φ = 1313433376390.

The previous prime is 1313433376319. The next prime is 1313433376397. The reversal of 1313433376391 is 1936733343131.

It is a happy number.

Together with previous prime (1313433376319) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313433376391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313433376397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656716688195 + 656716688196.

It is an arithmetic number, because the mean of its divisors is an integer number (656716688196).

Almost surely, 2^{1313433376391} is an apocalyptic number.

1313433376391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313433376391 is an equidigital number, since it uses as much as digits as its factorization.

1313433376391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 47.

The spelling of 1313433376391 in words is "one trillion, three hundred thirteen billion, four hundred thirty-three million, three hundred seventy-six thousand, three hundred ninety-one".