1311311462947 has 2 divisors, whose sum is σ = 1311311462948. Its totient is φ = 1311311462946.

The previous prime is 1311311462917. The next prime is 1311311463031. The reversal of 1311311462947 is 7492641131131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311311462947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311311462917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655655731473 + 655655731474.

It is an arithmetic number, because the mean of its divisors is an integer number (655655731474).

Almost surely, 2^{1311311462947} is an apocalyptic number.

1311311462947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311311462947 is an equidigital number, since it uses as much as digits as its factorization.

1311311462947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The spelling of 1311311462947 in words is "one trillion, three hundred eleven billion, three hundred eleven million, four hundred sixty-two thousand, nine hundred forty-seven".