223156 has 12 divisors (see below), whose sum is σ = 399168. Its totient is φ = 109112.

The previous prime is 223151. The next prime is 223207. The reversal of 223156 is 651322.

223156 = T₇₃ + T₇₄ + ... + T₁₁₉.

It is a happy number.

It is a super-3 number, since 3×223156³ = 33338569369741248, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223151) 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, 406 + ... + 781.

It is an arithmetic number, because the mean of its divisors is an integer number (33264).

2²²³¹⁵⁶ is an apocalyptic number.

It is an amenable number.

223156 is a deficient number, since it is larger than the sum of its proper divisors (176012).

223156 is a wasteful number, since it uses less digits than its factorization.

223156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238 (or 1236 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 223156 is about 472.3939034323. The cubic root of 223156 is about 60.6554072142.

Adding to 223156 its reverse (651322), we get a palindrome (874478).

The spelling of 223156 in words is "two hundred twenty-three thousand, one hundred fifty-six".