223523231 has 2 divisors, whose sum is σ = 223523232. Its totient is φ = 223523230.

The previous prime is 223523227. The next prime is 223523249. The reversal of 223523231 is 132325322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223523231 - 2² = 223523227 is a prime.

It is a super-2 number, since 2×223523231² = 99925269593358722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223523197 and 223523206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223523221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111761615 + 111761616.

It is an arithmetic number, because the mean of its divisors is an integer number (111761616).

Almost surely, 2^223523231 is an apocalyptic number.

223523231 is a deficient number, since it is larger than the sum of its proper divisors (1).

223523231 is an equidigital number, since it uses as much as digits as its factorization.

223523231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 23.

The square root of 223523231 is about 14950.6933284045. The cubic root of 223523231 is about 606.8866098956.

Adding to 223523231 its reverse (132325322), we get a palindrome (355848553).

It can be divided in two parts, 22 and 3523231, that added together give a palindrome (3523253).

The spelling of 223523231 in words is "two hundred twenty-three million, five hundred twenty-three thousand, two hundred thirty-one".