223345231 has 2 divisors, whose sum is σ = 223345232. Its totient is φ = 223345230.

The previous prime is 223345223. The next prime is 223345259. The reversal of 223345231 is 132543322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223345231 - 2³ = 223345223 is a prime.

It is a super-2 number, since 2×223345231² = 99766184420886722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223345196 and 223345205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223345271) 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, 111672615 + 111672616.

It is an arithmetic number, because the mean of its divisors is an integer number (111672616).

Almost surely, 2^223345231 is an apocalyptic number.

223345231 is a deficient number, since it is larger than the sum of its proper divisors (1).

223345231 is an equidigital number, since it uses as much as digits as its factorization.

223345231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 223345231 is about 14944.7392416194. The cubic root of 223345231 is about 606.7254715301.

Adding to 223345231 its reverse (132543322), we get a palindrome (355888553).

The spelling of 223345231 in words is "two hundred twenty-three million, three hundred forty-five thousand, two hundred thirty-one".