223321144 has 8 divisors (see below), whose sum is σ = 418727160. Its totient is φ = 111660568.

The previous prime is 223321139. The next prime is 223321169. The reversal of 223321144 is 441123322.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13957564 + ... + 13957579.

It is an arithmetic number, because the mean of its divisors is an integer number (52340895).

Almost surely, 2^223321144 is an apocalyptic number.

It is an amenable number.

223321144 is a deficient number, since it is larger than the sum of its proper divisors (195406016).

223321144 is a wasteful number, since it uses less digits than its factorization.

223321144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27915149 (or 27915145 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 223321144 is about 14943.9333510291. The cubic root of 223321144 is about 606.7036596745.

Adding to 223321144 its reverse (441123322), we get a palindrome (664444466).

The spelling of 223321144 in words is "two hundred twenty-three million, three hundred twenty-one thousand, one hundred forty-four".