131321020121113 has 2 divisors, whose sum is σ = 131321020121114. Its totient is φ = 131321020121112.

The previous prime is 131321020121077. The next prime is 131321020121171. The reversal of 131321020121113 is 311121020123131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130408246247449 + 912773873664 = 11419643^2 + 955392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131321020121113 is a prime.

It is not a weakly prime, because it can be changed into another prime (131321020121713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65660510060556 + 65660510060557.

It is an arithmetic number, because the mean of its divisors is an integer number (65660510060557).

Almost surely, 2^{131321020121113} is an apocalyptic number.

It is an amenable number.

131321020121113 is a deficient number, since it is larger than the sum of its proper divisors (1).

131321020121113 is an equidigital number, since it uses as much as digits as its factorization.

131321020121113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 131321020121113 its reverse (311121020123131), we get a palindrome (442442040244244).

The spelling of 131321020121113 in words is "one hundred thirty-one trillion, three hundred twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred thirteen".