123203100313 has 2 divisors, whose sum is σ = 123203100314. Its totient is φ = 123203100312.

The previous prime is 123203100287. The next prime is 123203100337. The reversal of 123203100313 is 313001302321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66807774784 + 56395325529 = 258472^2 + 237477^2 .

It is a cyclic number.

It is not a de Polignac number, because 123203100313 - 2³³ = 114613165721 is a prime.

It is not a weakly prime, because it can be changed into another prime (123203104313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61601550156 + 61601550157.

It is an arithmetic number, because the mean of its divisors is an integer number (61601550157).

Almost surely, 2^123203100313 is an apocalyptic number.

It is an amenable number.

123203100313 is a deficient number, since it is larger than the sum of its proper divisors (1).

123203100313 is an equidigital number, since it uses as much as digits as its factorization.

123203100313 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 19.

Adding to 123203100313 its reverse (313001302321), we get a palindrome (436204402634).

The spelling of 123203100313 in words is "one hundred twenty-three billion, two hundred three million, one hundred thousand, three hundred thirteen".