12315671 has 2 divisors, whose sum is σ = 12315672. Its totient is φ = 12315670.

The previous prime is 12315661. The next prime is 12315679. The reversal of 12315671 is 17651321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12315671 is a prime.

It is a Chen prime.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 12315671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12315679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6157835 + 6157836.

It is an arithmetic number, because the mean of its divisors is an integer number (6157836).

Almost surely, 2^12315671 is an apocalyptic number.

12315671 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315671 is an equidigital number, since it uses as much as digits as its factorization.

12315671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 26.

The square root of 12315671 is about 3509.3690316067. The cubic root of 12315671 is about 230.9330153161.

Adding to 12315671 its reverse (17651321), we get a palindrome (29966992).

The spelling of 12315671 in words is "twelve million, three hundred fifteen thousand, six hundred seventy-one".