321132223 has 4 divisors (see below), whose sum is σ = 321709320. Its totient is φ = 320555128.

The previous prime is 321132211. The next prime is 321132239. The reversal of 321132223 is 322231123.

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

It is a cyclic number.

It is not a de Polignac number, because 321132223 - 2¹⁷ = 321001151 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 321132223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321132293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287713 + ... + 288826.

It is an arithmetic number, because the mean of its divisors is an integer number (80427330).

Almost surely, 2^321132223 is an apocalyptic number.

321132223 is a deficient number, since it is larger than the sum of its proper divisors (577097).

321132223 is an equidigital number, since it uses as much as digits as its factorization.

321132223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577096.

The product of its digits is 432, while the sum is 19.

The square root of 321132223 is about 17920.1624713617. The cubic root of 321132223 is about 684.7961266583.

Adding to 321132223 its reverse (322231123), we get a palindrome (643363346).

The spelling of 321132223 in words is "three hundred twenty-one million, one hundred thirty-two thousand, two hundred twenty-three".