223869321 has 24 divisors (see below), whose sum is σ = 359480576. Its totient is φ = 133319520.

The previous prime is 223869313. The next prime is 223869341. The reversal of 223869321 is 123968322.

It is not a de Polignac number, because 223869321 - 2³ = 223869313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (223869341) 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 23 ways as a sum of consecutive naturals, for example, 27235 + ... + 34488.

Almost surely, 2^223869321 is an apocalyptic number.

It is an amenable number.

223869321 is a deficient number, since it is larger than the sum of its proper divisors (135611255).

223869321 is a wasteful number, since it uses less digits than its factorization.

223869321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61773 (or 61770 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 223869321 is about 14962.2632312094. The cubic root of 223869321 is about 607.1996706842.

Subtracting from 223869321 its reverse (123968322), we obtain a palindrome (99900999).

The spelling of 223869321 in words is "two hundred twenty-three million, eight hundred sixty-nine thousand, three hundred twenty-one".