243320534532 has 36 divisors (see below), whose sum is σ = 615086219020. Its totient is φ = 81103419072.

The previous prime is 243320534497. The next prime is 243320534539. The reversal of 243320534532 is 235435023342.

It is a happy number.

243320534532 is a `hidden beast` number, since 2 + 43 + 32 + 0 + 53 + 4 + 532 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 125023059396 + 118297475136 = 353586^2 + 343944^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (243320534539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 808194 + ... + 1067622.

Almost surely, 2^243320534532 is an apocalyptic number.

It is an amenable number.

243320534532 is an abundant number, since it is smaller than the sum of its proper divisors (371765684488).

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

243320534532 is a wasteful number, since it uses less digits than its factorization.

243320534532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285492 (or 285487 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 36.

Adding to 243320534532 its reverse (235435023342), we get a palindrome (478755557874).

The spelling of 243320534532 in words is "two hundred forty-three billion, three hundred twenty million, five hundred thirty-four thousand, five hundred thirty-two".