243143532 has 120 divisors (see below), whose sum is σ = 676515840. Its totient is φ = 75932640.

The previous prime is 243143531. The next prime is 243143561. The reversal of 243143532 is 235341342.

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 = 243143496 and 243143505.

It is not an unprimeable number, because it can be changed into a prime (243143531) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 781657 + ... + 781967.

It is an arithmetic number, because the mean of its divisors is an integer number (5637632).

Almost surely, 2^243143532 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 243143532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338257920).

243143532 is an abundant number, since it is smaller than the sum of its proper divisors (433372308).

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

243143532 is a wasteful number, since it uses less digits than its factorization.

243143532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 462 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 243143532 is about 15593.0603795406. The cubic root of 243143532 is about 624.1479863508.

Adding to 243143532 its reverse (235341342), we get a palindrome (478484874).

The spelling of 243143532 in words is "two hundred forty-three million, one hundred forty-three thousand, five hundred thirty-two".