1311226361149 has 2 divisors, whose sum is σ = 1311226361150. Its totient is φ = 1311226361148.

The previous prime is 1311226361077. The next prime is 1311226361177. The reversal of 1311226361149 is 9411636221131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 692340484900 + 618885876249 = 832070^2 + 786693^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311226361149 - 2⁹ = 1311226360637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311226361189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655613180574 + 655613180575.

It is an arithmetic number, because the mean of its divisors is an integer number (655613180575).

Almost surely, 2^{1311226361149} is an apocalyptic number.

It is an amenable number.

1311226361149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311226361149 is an equidigital number, since it uses as much as digits as its factorization.

1311226361149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The spelling of 1311226361149 in words is "one trillion, three hundred eleven billion, two hundred twenty-six million, three hundred sixty-one thousand, one hundred forty-nine".