123230279 has 2 divisors, whose sum is σ = 123230280. Its totient is φ = 123230278.

The previous prime is 123230273. The next prime is 123230293. The reversal of 123230279 is 972032321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123230279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123230273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615139 + 61615140.

It is an arithmetic number, because the mean of its divisors is an integer number (61615140).

Almost surely, 2^123230279 is an apocalyptic number.

123230279 is a deficient number, since it is larger than the sum of its proper divisors (1).

123230279 is an equidigital number, since it uses as much as digits as its factorization.

123230279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 123230279 is about 11100.9134308849. The cubic root of 123230279 is about 497.6291478891.

The spelling of 123230279 in words is "one hundred twenty-three million, two hundred thirty thousand, two hundred seventy-nine".