323221 has 4 divisors (see below), whose sum is σ = 342252. Its totient is φ = 304192.

The previous prime is 323207. The next prime is 323233. The reversal of 323221 is 122323.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87025 + 236196 = 295^2 + 486^2 .

It is a cyclic number.

It is not a de Polignac number, because 323221 - 2⁷ = 323093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9490 + ... + 9523.

It is an arithmetic number, because the mean of its divisors is an integer number (85563).

2³²³²²¹ is an apocalyptic number.

It is an amenable number.

323221 is a deficient number, since it is larger than the sum of its proper divisors (19031).

323221 is a wasteful number, since it uses less digits than its factorization.

323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19030.

The product of its digits is 72, while the sum is 13.

The square root of 323221 is about 568.5252852776. The cubic root of 323221 is about 68.6277651692.

Adding to 323221 its reverse (122323), we get a palindrome (445544).

It can be divided in two parts, 32322 and 1, that added together give a palindrome (32323).

The spelling of 323221 in words is "three hundred twenty-three thousand, two hundred twenty-one", and thus it is an iban number.