123388313 has 2 divisors, whose sum is σ = 123388314. Its totient is φ = 123388312.

The previous prime is 123388297. The next prime is 123388319. The reversal of 123388313 is 313883321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114340249 + 9048064 = 10693^2 + 3008^2 .

It is a cyclic number.

It is not a de Polignac number, because 123388313 - 2⁴ = 123388297 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123388313.

It is not a weakly prime, because it can be changed into another prime (123388319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61694156 + 61694157.

It is an arithmetic number, because the mean of its divisors is an integer number (61694157).

Almost surely, 2^123388313 is an apocalyptic number.

It is an amenable number.

123388313 is a deficient number, since it is larger than the sum of its proper divisors (1).

123388313 is an equidigital number, since it uses as much as digits as its factorization.

123388313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 123388313 is about 11108.0292131413. The cubic root of 123388313 is about 497.8417815903.

The spelling of 123388313 in words is "one hundred twenty-three million, three hundred eighty-eight thousand, three hundred thirteen".