243513232 has 30 divisors (see below), whose sum is σ = 488664098. Its totient is φ = 117551616.

The previous prime is 243513209. The next prime is 243513289. The reversal of 243513232 is 232315342.

243513232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 10523536 + 232989696 = 3244^2 + 15264^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243513197 and 243513206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4408 + ... + 22504.

Almost surely, 2^243513232 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 243513232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244332049).

243513232 is an abundant number, since it is smaller than the sum of its proper divisors (245150866).

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

243513232 is a wasteful number, since it uses less digits than its factorization.

243513232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18163 (or 18128 counting only the distinct ones).

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

The square root of 243513232 is about 15604.9105091955. The cubic root of 243513232 is about 624.4641653813.

Adding to 243513232 its reverse (232315342), we get a palindrome (475828574).

The spelling of 243513232 in words is "two hundred forty-three million, five hundred thirteen thousand, two hundred thirty-two".