123203113013 has 2 divisors, whose sum is σ = 123203113014. Its totient is φ = 123203113012.

The previous prime is 123203112971. The next prime is 123203113051. The reversal of 123203113013 is 310311302321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114336630769 + 8866482244 = 338137^2 + 94162^2 .

It is an emirp because it is prime and its reverse (310311302321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123203113013 - 2¹⁶ = 123203047477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123203113613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61601556506 + 61601556507.

It is an arithmetic number, because the mean of its divisors is an integer number (61601556507).

Almost surely, 2^123203113013 is an apocalyptic number.

It is an amenable number.

123203113013 is a deficient number, since it is larger than the sum of its proper divisors (1).

123203113013 is an equidigital number, since it uses as much as digits as its factorization.

123203113013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123203113013 its reverse (310311302321), we get a palindrome (433514415334).

The spelling of 123203113013 in words is "one hundred twenty-three billion, two hundred three million, one hundred thirteen thousand, thirteen".