12320017 has 2 divisors, whose sum is σ = 12320018. Its totient is φ = 12320016.

The previous prime is 12319997. The next prime is 12320023. The reversal of 12320017 is 71002321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8059921 + 4260096 = 2839^2 + 2064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12320017 is a prime.

It is not a weakly prime, because it can be changed into another prime (12320047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160008 + 6160009.

It is an arithmetic number, because the mean of its divisors is an integer number (6160009).

Almost surely, 2^12320017 is an apocalyptic number.

It is an amenable number.

12320017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320017 is an equidigital number, since it uses as much as digits as its factorization.

12320017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 12320017 is about 3509.9881766183. The cubic root of 12320017 is about 230.9601762899.

Adding to 12320017 its reverse (71002321), we get a palindrome (83322338).

The spelling of 12320017 in words is "twelve million, three hundred twenty thousand, seventeen".