12309361 has 2 divisors, whose sum is σ = 12309362. Its totient is φ = 12309360.

The previous prime is 12309317. The next prime is 12309371. The reversal of 12309361 is 16390321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 24336 = 3505^2 + 156^2 .

It is an emirp because it is prime and its reverse (16390321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12309361 - 2⁷ = 12309233 is a prime.

It is not a weakly prime, because it can be changed into another prime (12309371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6154680 + 6154681.

It is an arithmetic number, because the mean of its divisors is an integer number (6154681).

Almost surely, 2^12309361 is an apocalyptic number.

It is an amenable number.

12309361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12309361 is an equidigital number, since it uses as much as digits as its factorization.

12309361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 12309361 is about 3508.4698944127. The cubic root of 12309361 is about 230.8935686560.

Adding to 12309361 its reverse (16390321), we get a palindrome (28699682).

The spelling of 12309361 in words is "twelve million, three hundred nine thousand, three hundred sixty-one".