1311303112117 has 2 divisors, whose sum is σ = 1311303112118. Its totient is φ = 1311303112116.

The previous prime is 1311303112019. The next prime is 1311303112127. The reversal of 1311303112117 is 7112113031131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1008897704721 + 302405407396 = 1004439^2 + 549914^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311303112117 - 2²⁷ = 1311168894389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311303112091 and 1311303112100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311303112127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655651556058 + 655651556059.

It is an arithmetic number, because the mean of its divisors is an integer number (655651556059).

Almost surely, 2^{1311303112117} is an apocalyptic number.

It is an amenable number.

1311303112117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311303112117 is an equidigital number, since it uses as much as digits as its factorization.

1311303112117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 25.

Adding to 1311303112117 its reverse (7112113031131), we get a palindrome (8423416143248).

The spelling of 1311303112117 in words is "one trillion, three hundred eleven billion, three hundred three million, one hundred twelve thousand, one hundred seventeen".