1311241352273 has 2 divisors, whose sum is σ = 1311241352274. Its totient is φ = 1311241352272.

The previous prime is 1311241352263. The next prime is 1311241352381. The reversal of 1311241352273 is 3722531421131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1068800333584 + 242441018689 = 1033828^2 + 492383^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311241352273 - 2⁶ = 1311241352209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311241352203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655620676136 + 655620676137.

It is an arithmetic number, because the mean of its divisors is an integer number (655620676137).

Almost surely, 2^{1311241352273} is an apocalyptic number.

It is an amenable number.

1311241352273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311241352273 is an equidigital number, since it uses as much as digits as its factorization.

1311241352273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The spelling of 1311241352273 in words is "one trillion, three hundred eleven billion, two hundred forty-one million, three hundred fifty-two thousand, two hundred seventy-three".