321229 has 4 divisors (see below), whose sum is σ = 323680. Its totient is φ = 318780.

The previous prime is 321227. The next prime is 321239. The reversal of 321229 is 922123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 321229 - 2¹ = 321227 is a prime.

It is a d-powerful number, because it can be written as 3 + 2⁵ + 2¹⁷ + 1 + 2¹⁷ + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321221) 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, 1017 + ... + 1294.

It is an arithmetic number, because the mean of its divisors is an integer number (80920).

2³²¹²²⁹ is an apocalyptic number.

It is an amenable number.

321229 is a deficient number, since it is larger than the sum of its proper divisors (2451).

321229 is a wasteful number, since it uses less digits than its factorization.

321229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450.

The product of its digits is 216, while the sum is 19.

The square root of 321229 is about 566.7706767291. The cubic root of 321229 is about 68.4864910224.

It can be divided in two parts, 32122 and 9, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 321229 in words is "three hundred twenty-one thousand, two hundred twenty-nine".