323405123 has 4 divisors (see below), whose sum is σ = 332145840. Its totient is φ = 314664408.

The previous prime is 323405087. The next prime is 323405141. The reversal of 323405123 is 321504323.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 323405123 - 2²⁶ = 256296259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323405143) 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 in 3 ways as a sum of consecutive naturals, for example, 4370303 + ... + 4370376.

It is an arithmetic number, because the mean of its divisors is an integer number (83036460).

Almost surely, 2^323405123 is an apocalyptic number.

323405123 is a deficient number, since it is larger than the sum of its proper divisors (8740717).

323405123 is an equidigital number, since it uses as much as digits as its factorization.

323405123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8740716.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 323405123 is about 17983.4680470703. The cubic root of 323405123 is about 686.4079397547.

Adding to 323405123 its reverse (321504323), we get a palindrome (644909446).

The spelling of 323405123 in words is "three hundred twenty-three million, four hundred five thousand, one hundred twenty-three".