1312315908971 has 2 divisors, whose sum is σ = 1312315908972. Its totient is φ = 1312315908970.

The previous prime is 1312315908881. The next prime is 1312315908989. The reversal of 1312315908971 is 1798095132131.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1798095132131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312315908971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312315908991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656157954485 + 656157954486.

It is an arithmetic number, because the mean of its divisors is an integer number (656157954486).

Almost surely, 2^{1312315908971} is an apocalyptic number.

1312315908971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312315908971 is an equidigital number, since it uses as much as digits as its factorization.

1312315908971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 50.

The spelling of 1312315908971 in words is "one trillion, three hundred twelve billion, three hundred fifteen million, nine hundred eight thousand, nine hundred seventy-one".