1313565245243 has 2 divisors, whose sum is σ = 1313565245244. Its totient is φ = 1313565245242.

The previous prime is 1313565245203. The next prime is 1313565245249. The reversal of 1313565245243 is 3425425653131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1313565245243 - 2²⁰ = 1313564196667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1313565245194 and 1313565245203.

It is not a weakly prime, because it can be changed into another prime (1313565245249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656782622621 + 656782622622.

It is an arithmetic number, because the mean of its divisors is an integer number (656782622622).

Almost surely, 2^{1313565245243} is an apocalyptic number.

1313565245243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313565245243 is an equidigital number, since it uses as much as digits as its factorization.

1313565245243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296000, while the sum is 44.

The spelling of 1313565245243 in words is "one trillion, three hundred thirteen billion, five hundred sixty-five million, two hundred forty-five thousand, two hundred forty-three".