123230321 has 2 divisors, whose sum is σ = 123230322. Its totient is φ = 123230320.

The previous prime is 123230299. The next prime is 123230323. The reversal of 123230321 is 123032321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79405921 + 43824400 = 8911^2 + 6620^2 .

It is a cyclic number.

It is not a de Polignac number, because 123230321 - 2¹⁰ = 123229297 is a prime.

Together with 123230323, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 123230321.

It is not a weakly prime, because it can be changed into another prime (123230323) 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, 61615160 + 61615161.

It is an arithmetic number, because the mean of its divisors is an integer number (61615161).

Almost surely, 2^123230321 is an apocalyptic number.

It is an amenable number.

123230321 is a deficient number, since it is larger than the sum of its proper divisors (1).

123230321 is an equidigital number, since it uses as much as digits as its factorization.

123230321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123230321 is about 11100.9153226209. The cubic root of 123230321 is about 497.6292044240.

Adding to 123230321 its reverse (123032321), we get a palindrome (246262642).

The spelling of 123230321 in words is "one hundred twenty-three million, two hundred thirty thousand, three hundred twenty-one".