323321403 has 4 divisors (see below), whose sum is σ = 431095208. Its totient is φ = 215547600.

The previous prime is 323321389. The next prime is 323321441. The reversal of 323321403 is 304123323.

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

It is not a de Polignac number, because 323321403 - 2¹² = 323317307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 323321403.

It is not an unprimeable number, because it can be changed into a prime (323321443) 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 in 3 ways as a sum of consecutive naturals, for example, 53886898 + ... + 53886903.

It is an arithmetic number, because the mean of its divisors is an integer number (107773802).

Almost surely, 2^323321403 is an apocalyptic number.

323321403 is a deficient number, since it is larger than the sum of its proper divisors (107773805).

323321403 is a wasteful number, since it uses less digits than its factorization.

323321403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107773804.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 323321403 is about 17981.1402030016. The cubic root of 323321403 is about 686.3487044199.

Adding to 323321403 its reverse (304123323), we get a palindrome (627444726).

The spelling of 323321403 in words is "three hundred twenty-three million, three hundred twenty-one thousand, four hundred three".