1308039040013 has 2 divisors, whose sum is σ = 1308039040014. Its totient is φ = 1308039040012.

The previous prime is 1308039039941. The next prime is 1308039040051. The reversal of 1308039040013 is 3100409308031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1170903618889 + 137135421124 = 1082083^2 + 370318^2 .

It is a cyclic number.

It is not a de Polignac number, because 1308039040013 - 2³² = 1303744072717 is a prime.

It is a super-2 number, since 2×1308039040013² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1308039040073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654019520006 + 654019520007.

It is an arithmetic number, because the mean of its divisors is an integer number (654019520007).

Almost surely, 2^{1308039040013} is an apocalyptic number.

It is an amenable number.

1308039040013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308039040013 is an equidigital number, since it uses as much as digits as its factorization.

1308039040013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 1308039040013 in words is "one trillion, three hundred eight billion, thirty-nine million, forty thousand, thirteen".