243245223 has 12 divisors (see below), whose sum is σ = 378381640. Its totient is φ = 149689296.

The previous prime is 243245221. The next prime is 243245237. The reversal of 243245223 is 322542342.

It is a happy number.

243245223 is a `hidden beast` number, since 2 + 432 + 4 + 5 + 223 = 666.

It is not a de Polignac number, because 243245223 - 2¹ = 243245221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243245221) 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 11 ways as a sum of consecutive naturals, for example, 1039393 + ... + 1039626.

Almost surely, 2^243245223 is an apocalyptic number.

243245223 is a deficient number, since it is larger than the sum of its proper divisors (135136417).

243245223 is a wasteful number, since it uses less digits than its factorization.

243245223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079038 (or 2079035 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 243245223 is about 15596.3208161412. The cubic root of 243245223 is about 624.2349876184.

Adding to 243245223 its reverse (322542342), we get a palindrome (565787565).

The spelling of 243245223 in words is "two hundred forty-three million, two hundred forty-five thousand, two hundred twenty-three".