123313317973 has 2 divisors, whose sum is σ = 123313317974. Its totient is φ = 123313317972.

The previous prime is 123313317947. The next prime is 123313318043. The reversal of 123313317973 is 379713313321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109380348529 + 13932969444 = 330727^2 + 118038^2 .

It is an emirp because it is prime and its reverse (379713313321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123313317973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123313317923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61656658986 + 61656658987.

It is an arithmetic number, because the mean of its divisors is an integer number (61656658987).

Almost surely, 2^123313317973 is an apocalyptic number.

It is an amenable number.

123313317973 is a deficient number, since it is larger than the sum of its proper divisors (1).

123313317973 is an equidigital number, since it uses as much as digits as its factorization.

123313317973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 214326, while the sum is 43.

The spelling of 123313317973 in words is "one hundred twenty-three billion, three hundred thirteen million, three hundred seventeen thousand, nine hundred seventy-three".