243111424 has 120 divisors (see below), whose sum is σ = 542697408. Its totient is φ = 108625920.

The previous prime is 243111409. The next prime is 243111431. The reversal of 243111424 is 424111342.

It is a happy number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 243111395 and 243111404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4586982 + ... + 4587034.

Almost surely, 2^243111424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243111424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271348704).

243111424 is an abundant number, since it is smaller than the sum of its proper divisors (299585984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243111424 is an equidigital number, since it uses as much as digits as its factorization.

243111424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 103 counting only the distinct ones).

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

The square root of 243111424 is about 15592.0307849876. The cubic root of 243111424 is about 624.1205114604.

Adding to 243111424 its reverse (424111342), we get a palindrome (667222766).

The spelling of 243111424 in words is "two hundred forty-three million, one hundred eleven thousand, four hundred twenty-four".