131030121021013 has 2 divisors, whose sum is σ = 131030121021014. Its totient is φ = 131030121021012.

The previous prime is 131030121020989. The next prime is 131030121021047. The reversal of 131030121021013 is 310120121030131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119907909361009 + 11122211660004 = 10950247^2 + 3334998^2 .

It is an emirp because it is prime and its reverse (310120121030131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131030121021013 is a prime.

It is a super-2 number, since 2×131030121021013² (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 (131030121021073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515060510506 + 65515060510507.

It is an arithmetic number, because the mean of its divisors is an integer number (65515060510507).

Almost surely, 2^{131030121021013} is an apocalyptic number.

It is an amenable number.

131030121021013 is a deficient number, since it is larger than the sum of its proper divisors (1).

131030121021013 is an equidigital number, since it uses as much as digits as its factorization.

131030121021013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 131030121021013 its reverse (310120121030131), we get a palindrome (441150242051144).

The spelling of 131030121021013 in words is "one hundred thirty-one trillion, thirty billion, one hundred twenty-one million, twenty-one thousand, thirteen".