243403212 has 48 divisors (see below), whose sum is σ = 647613792. Its totient is φ = 70487040.

The previous prime is 243403211. The next prime is 243403241. The reversal of 243403212 is 212304342.

243403212 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-2 number, since 2×243403212² = 118490247223833888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243403211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43239 + ... + 48542.

It is an arithmetic number, because the mean of its divisors is an integer number (13491954).

Almost surely, 2^243403212 is an apocalyptic number.

It is an amenable number.

243403212 is an abundant number, since it is smaller than the sum of its proper divisors (404210580).

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

243403212 is a wasteful number, since it uses less digits than its factorization.

243403212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91818 (or 91816 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243403212 is about 15601.3849385239. The cubic root of 243403212 is about 624.3701062942.

Adding to 243403212 its reverse (212304342), we get a palindrome (455707554).

The spelling of 243403212 in words is "two hundred forty-three million, four hundred three thousand, two hundred twelve".