12321497 has 2 divisors, whose sum is σ = 12321498. Its totient is φ = 12321496.

The previous prime is 12321487. The next prime is 12321499. The reversal of 12321497 is 79412321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10621081 + 1700416 = 3259^2 + 1304^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321497 - 2⁸ = 12321241 is a prime.

Together with 12321499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12321499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160748 + 6160749.

It is an arithmetic number, because the mean of its divisors is an integer number (6160749).

Almost surely, 2^12321497 is an apocalyptic number.

It is an amenable number.

12321497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321497 is an equidigital number, since it uses as much as digits as its factorization.

12321497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 12321497 is about 3510.1989972080. The cubic root of 12321497 is about 230.9694243121.

The spelling of 12321497 in words is "twelve million, three hundred twenty-one thousand, four hundred ninety-seven".