12319997 has 2 divisors, whose sum is σ = 12319998. Its totient is φ = 12319996.

The previous prime is 12319981. The next prime is 12320017. The reversal of 12319997 is 79991321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11689561 + 630436 = 3419^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 12319997 - 2⁴ = 12319981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12319907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159998 + 6159999.

It is an arithmetic number, because the mean of its divisors is an integer number (6159999).

Almost surely, 2^12319997 is an apocalyptic number.

It is an amenable number.

12319997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12319997 is an equidigital number, since it uses as much as digits as its factorization.

12319997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 41.

The square root of 12319997 is about 3509.9853276047. The cubic root of 12319997 is about 230.9600513115.

The spelling of 12319997 in words is "twelve million, three hundred nineteen thousand, nine hundred ninety-seven".