203130123113 has 2 divisors, whose sum is σ = 203130123114. Its totient is φ = 203130123112.

The previous prime is 203130123089. The next prime is 203130123139. The reversal of 203130123113 is 311321031302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202106890969 + 1023232144 = 449563^2 + 31988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203130123113 is a prime.

It is not a weakly prime, because it can be changed into another prime (203130123613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101565061556 + 101565061557.

It is an arithmetic number, because the mean of its divisors is an integer number (101565061557).

Almost surely, 2^203130123113 is an apocalyptic number.

It is an amenable number.

203130123113 is a deficient number, since it is larger than the sum of its proper divisors (1).

203130123113 is an equidigital number, since it uses as much as digits as its factorization.

203130123113 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 203130123113 its reverse (311321031302), we get a palindrome (514451154415).

The spelling of 203130123113 in words is "two hundred three billion, one hundred thirty million, one hundred twenty-three thousand, one hundred thirteen".