1311620271139 has 2 divisors, whose sum is σ = 1311620271140. Its totient is φ = 1311620271138.

The previous prime is 1311620271121. The next prime is 1311620271163. The reversal of 1311620271139 is 9311720261131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311620271139 - 2²⁹ = 1311083400227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311620271098 and 1311620271107.

It is not a weakly prime, because it can be changed into another prime (1311620271239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655810135569 + 655810135570.

It is an arithmetic number, because the mean of its divisors is an integer number (655810135570).

Almost surely, 2^{1311620271139} is an apocalyptic number.

1311620271139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311620271139 is an equidigital number, since it uses as much as digits as its factorization.

1311620271139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 1311620271139 in words is "one trillion, three hundred eleven billion, six hundred twenty million, two hundred seventy-one thousand, one hundred thirty-nine".