223530231 has 24 divisors (see below), whose sum is σ = 324987520. Its totient is φ = 136279584.

The previous prime is 223530221. The next prime is 223530233. The reversal of 223530231 is 132035322.

It is not a de Polignac number, because 223530231 - 2⁵ = 223530199 is a prime.

It is a super-2 number, since 2×223530231² = 99931528341826722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223530198 and 223530207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223530233) 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, 45606 + ... + 50268.

Almost surely, 2^223530231 is an apocalyptic number.

223530231 is a deficient number, since it is larger than the sum of its proper divisors (101457289).

223530231 is a wasteful number, since it uses less digits than its factorization.

223530231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743 (or 4714 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 223530231 is about 14950.9274294272. The cubic root of 223530231 is about 606.8929450491.

Adding to 223530231 its reverse (132035322), we get a palindrome (355565553).

The spelling of 223530231 in words is "two hundred twenty-three million, five hundred thirty thousand, two hundred thirty-one".