243132 has 12 divisors (see below), whose sum is σ = 567336. Its totient is φ = 81040.

The previous prime is 243121. The next prime is 243137. The reversal of 243132 is 231342.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×243132² = 118226338848, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243137) by changing a digit.

243132 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10119 + ... + 10142.

It is an arithmetic number, because the mean of its divisors is an integer number (47278).

2²⁴³¹³² is an apocalyptic number.

It is an amenable number.

243132 is an abundant number, since it is smaller than the sum of its proper divisors (324204).

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

243132 is a wasteful number, since it uses less digits than its factorization.

243132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20268 (or 20266 counting only the distinct ones).

The product of its digits is 144, while the sum is 15.

The square root of 243132 is about 493.0841713136. The cubic root of 243132 is about 62.4138118670.

Adding to 243132 its reverse (231342), we get a palindrome (474474).

It can be divided in two parts, 2 and 43132, that added together give a palindrome (43134).

The spelling of 243132 in words is "two hundred forty-three thousand, one hundred thirty-two".