1311423364109 has 2 divisors, whose sum is σ = 1311423364110. Its totient is φ = 1311423364108.

The previous prime is 1311423364073. The next prime is 1311423364117. The reversal of 1311423364109 is 9014633241131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1298756536900 + 12666827209 = 1139630^2 + 112547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311423364109 - 2³² = 1307128396813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311423364129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655711682054 + 655711682055.

It is an arithmetic number, because the mean of its divisors is an integer number (655711682055).

Almost surely, 2^{1311423364109} is an apocalyptic number.

It is an amenable number.

1311423364109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311423364109 is an equidigital number, since it uses as much as digits as its factorization.

1311423364109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 1311423364109 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, three hundred sixty-four thousand, one hundred nine".