1311333311819 has 2 divisors, whose sum is σ = 1311333311820. Its totient is φ = 1311333311818.

The previous prime is 1311333311801. The next prime is 1311333311903. The reversal of 1311333311819 is 9181133331131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311333311819 - 2²⁰ = 1311332263243 is a prime.

It is a super-2 number, since 2×1311333311819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1311333371819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655666655909 + 655666655910.

It is an arithmetic number, because the mean of its divisors is an integer number (655666655910).

Almost surely, 2^{1311333311819} is an apocalyptic number.

1311333311819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311333311819 is an equidigital number, since it uses as much as digits as its factorization.

1311333311819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 38.

The spelling of 1311333311819 in words is "one trillion, three hundred eleven billion, three hundred thirty-three million, three hundred eleven thousand, eight hundred nineteen".