1311255533023 has 2 divisors, whose sum is σ = 1311255533024. Its totient is φ = 1311255533022.

The previous prime is 1311255532997. The next prime is 1311255533039. The reversal of 1311255533023 is 3203355521131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311255533023 - 2⁵ = 1311255532991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311255533023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311265533023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655627766511 + 655627766512.

It is an arithmetic number, because the mean of its divisors is an integer number (655627766512).

Almost surely, 2^{1311255533023} is an apocalyptic number.

1311255533023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311255533023 is an equidigital number, since it uses as much as digits as its factorization.

1311255533023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 34.

The spelling of 1311255533023 in words is "one trillion, three hundred eleven billion, two hundred fifty-five million, five hundred thirty-three thousand, twenty-three".