12308987 has 2 divisors, whose sum is σ = 12308988. Its totient is φ = 12308986.

The previous prime is 12308981. The next prime is 12308999. The reversal of 12308987 is 78980321.

12308987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12308987 - 2¹² = 12304891 is a prime.

It is a super-2 number, since 2×12308987² = 303022321932338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12308987.

It is not a weakly prime, because it can be changed into another prime (12308981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6154493 + 6154494.

It is an arithmetic number, because the mean of its divisors is an integer number (6154494).

Almost surely, 2^12308987 is an apocalyptic number.

12308987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12308987 is an equidigital number, since it uses as much as digits as its factorization.

12308987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 12308987 is about 3508.4165944198. The cubic root of 12308987 is about 230.8912301899.

The spelling of 12308987 in words is "twelve million, three hundred eight thousand, nine hundred eighty-seven".