123230210321 has 2 divisors, whose sum is σ = 123230210322. Its totient is φ = 123230210320.

The previous prime is 123230210273. The next prime is 123230210339. The reversal of 123230210321 is 123012032321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109468339600 + 13761870721 = 330860^2 + 117311^2 .

It is an emirp because it is prime and its reverse (123012032321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123230210321 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123230210293 and 123230210302.

It is not a weakly prime, because it can be changed into another prime (123230210381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615105160 + 61615105161.

It is an arithmetic number, because the mean of its divisors is an integer number (61615105161).

Almost surely, 2^123230210321 is an apocalyptic number.

It is an amenable number.

123230210321 is a deficient number, since it is larger than the sum of its proper divisors (1).

123230210321 is an equidigital number, since it uses as much as digits as its factorization.

123230210321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123230210321 its reverse (123012032321), we get a palindrome (246242242642).

The spelling of 123230210321 in words is "one hundred twenty-three billion, two hundred thirty million, two hundred ten thousand, three hundred twenty-one".