1311433165513 has 2 divisors, whose sum is σ = 1311433165514. Its totient is φ = 1311433165512.

The previous prime is 1311433165507. The next prime is 1311433165531. The reversal of 1311433165513 is 3155613341131.

Together with next prime (1311433165531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1283954135689 + 27479029824 = 1133117^2 + 165768^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311433165513 - 2²⁹ = 1310896294601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311433165813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655716582756 + 655716582757.

It is an arithmetic number, because the mean of its divisors is an integer number (655716582757).

Almost surely, 2^{1311433165513} is an apocalyptic number.

It is an amenable number.

1311433165513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311433165513 is an equidigital number, since it uses as much as digits as its factorization.

1311433165513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 37.

The spelling of 1311433165513 in words is "one trillion, three hundred eleven billion, four hundred thirty-three million, one hundred sixty-five thousand, five hundred thirteen".