201230123113 has 2 divisors, whose sum is σ = 201230123114. Its totient is φ = 201230123112.

The previous prime is 201230123093. The next prime is 201230123137. The reversal of 201230123113 is 311321032102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200916408169 + 313714944 = 448237^2 + 17712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201230123113 is a prime.

It is not a weakly prime, because it can be changed into another prime (201230123153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100615061556 + 100615061557.

It is an arithmetic number, because the mean of its divisors is an integer number (100615061557).

Almost surely, 2^201230123113 is an apocalyptic number.

It is an amenable number.

201230123113 is a deficient number, since it is larger than the sum of its proper divisors (1).

201230123113 is an equidigital number, since it uses as much as digits as its factorization.

201230123113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201230123113 its reverse (311321032102), we get a palindrome (512551155215).

The spelling of 201230123113 in words is "two hundred one billion, two hundred thirty million, one hundred twenty-three thousand, one hundred thirteen".