223018231 has 2 divisors, whose sum is σ = 223018232. Its totient is φ = 223018230.

The previous prime is 223018217. The next prime is 223018259. The reversal of 223018231 is 132810322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223018231 is a prime.

It is a super-2 number, since 2×223018231² = 99474262716738722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223018331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111509115 + 111509116.

It is an arithmetic number, because the mean of its divisors is an integer number (111509116).

Almost surely, 2^223018231 is an apocalyptic number.

223018231 is a deficient number, since it is larger than the sum of its proper divisors (1).

223018231 is an equidigital number, since it uses as much as digits as its factorization.

223018231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 223018231 is about 14933.7949296219. The cubic root of 223018231 is about 606.4292244263.

Adding to 223018231 its reverse (132810322), we get a palindrome (355828553).

The spelling of 223018231 in words is "two hundred twenty-three million, eighteen thousand, two hundred thirty-one".