131320123013 has 2 divisors, whose sum is σ = 131320123014. Its totient is φ = 131320123012.

The previous prime is 131320122917. The next prime is 131320123049. The reversal of 131320123013 is 310321023131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102004861924 + 29315261089 = 319382^2 + 171217^2 .

It is a cyclic number.

It is not a de Polignac number, because 131320123013 - 2⁸ = 131320122757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131320723013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65660061506 + 65660061507.

It is an arithmetic number, because the mean of its divisors is an integer number (65660061507).

Almost surely, 2^131320123013 is an apocalyptic number.

It is an amenable number.

131320123013 is a deficient number, since it is larger than the sum of its proper divisors (1).

131320123013 is an equidigital number, since it uses as much as digits as its factorization.

131320123013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131320123013 its reverse (310321023131), we get a palindrome (441641146144).

The spelling of 131320123013 in words is "one hundred thirty-one billion, three hundred twenty million, one hundred twenty-three thousand, thirteen".