12302321 has 2 divisors, whose sum is σ = 12302322. Its totient is φ = 12302320.

The previous prime is 12302317. The next prime is 12302347. The reversal of 12302321 is 12320321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9991921 + 2310400 = 3161^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 12302321 - 2² = 12302317 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12302296 and 12302305.

It is not a weakly prime, because it can be changed into another prime (12302371) 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, 6151160 + 6151161.

It is an arithmetic number, because the mean of its divisors is an integer number (6151161).

Almost surely, 2^12302321 is an apocalyptic number.

It is an amenable number.

12302321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12302321 is an equidigital number, since it uses as much as digits as its factorization.

12302321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 12302321 is about 3507.4664645581. The cubic root of 12302321 is about 230.8495425226.

Adding to 12302321 its reverse (12320321), we get a palindrome (24622642).

The spelling of 12302321 in words is "twelve million, three hundred two thousand, three hundred twenty-one".