131320121230013 has 2 divisors, whose sum is σ = 131320121230014. Its totient is φ = 131320121230012.

The previous prime is 131320121230007. The next prime is 131320121230031. The reversal of 131320121230013 is 310032121023131.

Together with next prime (131320121230031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84173523699769 + 47146597530244 = 9174613^2 + 6866338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131320121230013 is a prime.

It is a super-2 number, since 2×131320121230013² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131320121230033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65660060615006 + 65660060615007.

It is an arithmetic number, because the mean of its divisors is an integer number (65660060615007).

Almost surely, 2^{131320121230013} is an apocalyptic number.

It is an amenable number.

131320121230013 is a deficient number, since it is larger than the sum of its proper divisors (1).

131320121230013 is an equidigital number, since it uses as much as digits as its factorization.

131320121230013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 131320121230013 its reverse (310032121023131), we get a palindrome (441352242253144).

The spelling of 131320121230013 in words is "one hundred thirty-one trillion, three hundred twenty billion, one hundred twenty-one million, two hundred thirty thousand, thirteen".