312304123 has 2 divisors, whose sum is σ = 312304124. Its totient is φ = 312304122.

The previous prime is 312304099. The next prime is 312304133. The reversal of 312304123 is 321403213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312304123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312304123.

It is not a weakly prime, because it can be changed into another prime (312304133) 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, 156152061 + 156152062.

It is an arithmetic number, because the mean of its divisors is an integer number (156152062).

Almost surely, 2^312304123 is an apocalyptic number.

312304123 is a deficient number, since it is larger than the sum of its proper divisors (1).

312304123 is an equidigital number, since it uses as much as digits as its factorization.

312304123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 312304123 is about 17672.1284230282. The cubic root of 312304123 is about 678.4625899867.

Adding to 312304123 its reverse (321403213), we get a palindrome (633707336).

It can be divided in two parts, 31230 and 4123, that added together give a palindrome (35353).

The spelling of 312304123 in words is "three hundred twelve million, three hundred four thousand, one hundred twenty-three".