1311235133563 has 2 divisors, whose sum is σ = 1311235133564. Its totient is φ = 1311235133562.

The previous prime is 1311235133521. The next prime is 1311235133651. The reversal of 1311235133563 is 3653315321131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311235133563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311235113563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655617566781 + 655617566782.

It is an arithmetic number, because the mean of its divisors is an integer number (655617566782).

Almost surely, 2^{1311235133563} is an apocalyptic number.

1311235133563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311235133563 is an equidigital number, since it uses as much as digits as its factorization.

1311235133563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 37.

The spelling of 1311235133563 in words is "one trillion, three hundred eleven billion, two hundred thirty-five million, one hundred thirty-three thousand, five hundred sixty-three".