323403213 has 16 divisors (see below), whose sum is σ = 499558016. Its totient is φ = 182269440.

The previous prime is 323403187. The next prime is 323403221. The reversal of 323403213 is 312304323.

It is not a de Polignac number, because 323403213 - 2⁶ = 323403149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 323403213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323403263) 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 15 ways as a sum of consecutive naturals, for example, 103948 + ... + 107013.

It is an arithmetic number, because the mean of its divisors is an integer number (31222376).

Almost surely, 2^323403213 is an apocalyptic number.

It is an amenable number.

323403213 is a deficient number, since it is larger than the sum of its proper divisors (176154803).

323403213 is a wasteful number, since it uses less digits than its factorization.

323403213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211044.

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

The square root of 323403213 is about 17983.4149426631. The cubic root of 323403213 is about 686.4065884653.

Adding to 323403213 its reverse (312304323), we get a palindrome (635707536).

It can be divided in two parts, 32340 and 3213, that added together give a palindrome (35553).

The spelling of 323403213 in words is "three hundred twenty-three million, four hundred three thousand, two hundred thirteen".