243424111 has 18 divisors (see below), whose sum is σ = 296045232. Its totient is φ = 199556280.

The previous prime is 243424091. The next prime is 243424133. The reversal of 243424111 is 111424342.

It is a happy number.

It is not a de Polignac number, because 243424111 - 2⁵ = 243424079 is a prime.

It is a super-2 number, since 2×243424111² = 118510595632280642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243724111) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21226 + ... + 30616.

Almost surely, 2^243424111 is an apocalyptic number.

243424111 is a deficient number, since it is larger than the sum of its proper divisors (52621121).

243424111 is an equidigital number, since it uses as much as digits as its factorization.

243424111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451 (or 9421 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 243424111 is about 15602.0547044292. The cubic root of 243424111 is about 624.3879755974.

Adding to 243424111 its reverse (111424342), we get a palindrome (354848453).

The spelling of 243424111 in words is "two hundred forty-three million, four hundred twenty-four thousand, one hundred eleven".