321321323 has 4 divisors (see below), whose sum is σ = 321406680. Its totient is φ = 321235968.

The previous prime is 321321277. The next prime is 321321353. The reversal of 321321323 is 323123123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323123123 = 167 ⋅1934869.

It is a cyclic number.

It is not a de Polignac number, because 321321323 - 2¹⁴ = 321304939 is a prime.

It is a super-2 number, since 2×321321323² = 206494785228940658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321321295 and 321321304.

It is not an unprimeable number, because it can be changed into a prime (321321353) 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, 36758 + ... + 44651.

It is an arithmetic number, because the mean of its divisors is an integer number (80351670).

Almost surely, 2^321321323 is an apocalyptic number.

321321323 is a deficient number, since it is larger than the sum of its proper divisors (85357).

321321323 is an equidigital number, since it uses as much as digits as its factorization.

321321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85356.

The product of its digits is 648, while the sum is 20.

The square root of 321321323 is about 17925.4378747076. The cubic root of 321321323 is about 684.9305152670.

Adding to 321321323 its reverse (323123123), we get a palindrome (644444446).

The spelling of 321321323 in words is "three hundred twenty-one million, three hundred twenty-one thousand, three hundred twenty-three".