1311112619 has 2 divisors, whose sum is σ = 1311112620. Its totient is φ = 1311112618.

The previous prime is 1311112609. The next prime is 1311112633. The reversal of 1311112619 is 9162111131.

It is a weak prime.

It is an emirp because it is prime and its reverse (9162111131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311112619 - 2⁴ = 1311112603 is a prime.

It is a super-2 number, since 2×1311112619² = 3438032599402078322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1311112609) 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, 655556309 + 655556310.

It is an arithmetic number, because the mean of its divisors is an integer number (655556310).

Almost surely, 2^1311112619 is an apocalyptic number.

1311112619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311112619 is an equidigital number, since it uses as much as digits as its factorization.

1311112619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 26.

The square root of 1311112619 is about 36209.2891258583. The cubic root of 1311112619 is about 1094.4938672700.

The spelling of 1311112619 in words is "one billion, three hundred eleven million, one hundred twelve thousand, six hundred nineteen".