1311034269161 has 2 divisors, whose sum is σ = 1311034269162. Its totient is φ = 1311034269160.

The previous prime is 1311034269143. The next prime is 1311034269169. The reversal of 1311034269161 is 1619624301131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1210151804761 + 100882464400 = 1100069^2 + 317620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311034269161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311034269169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655517134580 + 655517134581.

It is an arithmetic number, because the mean of its divisors is an integer number (655517134581).

Almost surely, 2^{1311034269161} is an apocalyptic number.

It is an amenable number.

1311034269161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311034269161 is an equidigital number, since it uses as much as digits as its factorization.

1311034269161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 1311034269161 in words is "one trillion, three hundred eleven billion, thirty-four million, two hundred sixty-nine thousand, one hundred sixty-one".