243551232 has 176 divisors, whose sum is σ = 754606080. Its totient is φ = 77451264.

The previous prime is 243551179. The next prime is 243551239. The reversal of 243551232 is 232155342.

It is a happy number.

243551232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×243551232³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 243551196 and 243551205.

It is not an unprimeable number, because it can be changed into a prime (243551239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635713 + ... + 636095.

Almost surely, 2^243551232 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 243551232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377303040).

243551232 is an abundant number, since it is smaller than the sum of its proper divisors (511054848).

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

243551232 is a wasteful number, since it uses less digits than its factorization.

243551232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 411 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 243551232 is about 15606.1280271565. The cubic root of 243551232 is about 624.4966460311.

The spelling of 243551232 in words is "two hundred forty-three million, five hundred fifty-one thousand, two hundred thirty-two".