123302321 has 2 divisors, whose sum is σ = 123302322. Its totient is φ = 123302320.

The previous prime is 123302317. The next prime is 123302339. The reversal of 123302321 is 123203321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122965921 + 336400 = 11089^2 + 580^2 .

It is an emirp because it is prime and its reverse (123203321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123302321 - 2² = 123302317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123302321.

It is not a weakly prime, because it can be changed into another prime (123302351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61651160 + 61651161.

It is an arithmetic number, because the mean of its divisors is an integer number (61651161).

Almost surely, 2^123302321 is an apocalyptic number.

It is an amenable number.

123302321 is a deficient number, since it is larger than the sum of its proper divisors (1).

123302321 is an equidigital number, since it uses as much as digits as its factorization.

123302321 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 123302321 is about 11104.1578248870. The cubic root of 123302321 is about 497.7261024565.

Adding to 123302321 its reverse (123203321), we get a palindrome (246505642).

The spelling of 123302321 in words is "one hundred twenty-three million, three hundred two thousand, three hundred twenty-one".