12312899 has 2 divisors, whose sum is σ = 12312900. Its totient is φ = 12312898.

The previous prime is 12312877. The next prime is 12312901. The reversal of 12312899 is 99821321.

12312899 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12312899 is a prime.

Together with 12312901, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is a zygodrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12312829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156449 + 6156450.

It is an arithmetic number, because the mean of its divisors is an integer number (6156450).

Almost surely, 2^12312899 is an apocalyptic number.

12312899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312899 is an equidigital number, since it uses as much as digits as its factorization.

12312899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 12312899 is about 3508.9740665898. The cubic root of 12312899 is about 230.9156879518.

The spelling of 12312899 in words is "twelve million, three hundred twelve thousand, eight hundred ninety-nine".