12310399 has 4 divisors (see below), whose sum is σ = 12321040. Its totient is φ = 12299760.

The previous prime is 12310387. The next prime is 12310411. The reversal of 12310399 is 99301321.

12310399 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99301321 = 7 ⋅14185903.

It is an interprime number because it is at equal distance from previous prime (12310387) and next prime (12310411).

It is a cyclic number.

It is not a de Polignac number, because 12310399 - 2¹⁹ = 11786111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310369) 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 in 3 ways as a sum of consecutive naturals, for example, 3339 + ... + 5980.

It is an arithmetic number, because the mean of its divisors is an integer number (3080260).

Almost surely, 2^12310399 is an apocalyptic number.

12310399 is a deficient number, since it is larger than the sum of its proper divisors (10641).

12310399 is an equidigital number, since it uses as much as digits as its factorization.

12310399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 12310399 is about 3508.6178190279. The cubic root of 12310399 is about 230.9000585891.

It can be divided in two parts, 1 and 2310399, that added together give a square (2310400 = 1520²).

The spelling of 12310399 in words is "twelve million, three hundred ten thousand, three hundred ninety-nine".