1311003323191 has 2 divisors, whose sum is σ = 1311003323192. Its totient is φ = 1311003323190.

The previous prime is 1311003323153. The next prime is 1311003323219. The reversal of 1311003323191 is 1913233001131.

It is an a-pointer prime, because the next prime (1311003323219) can be obtained adding 1311003323191 to its sum of digits (28).

It is a strong prime.

It is an emirp because it is prime and its reverse (1913233001131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311003323191 - 2³⁵ = 1276643584823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311003327191) 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, 655501661595 + 655501661596.

It is an arithmetic number, because the mean of its divisors is an integer number (655501661596).

Almost surely, 2^{1311003323191} is an apocalyptic number.

1311003323191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311003323191 is an equidigital number, since it uses as much as digits as its factorization.

1311003323191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

The spelling of 1311003323191 in words is "one trillion, three hundred eleven billion, three million, three hundred twenty-three thousand, one hundred ninety-one".