243212 has 12 divisors (see below), whose sum is σ = 436296. Its totient is φ = 118560.

The previous prime is 243209. The next prime is 243227. The reversal of 243212 is 212342.

243212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2⁹ + 4² + 2¹⁵ + 3¹¹ + 1 + 2¹⁵ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578 + ... + 905.

It is an arithmetic number, because the mean of its divisors is an integer number (36358).

2²⁴³²¹² is an apocalyptic number.

It is an amenable number.

243212 is a deficient number, since it is larger than the sum of its proper divisors (193084).

243212 is a wasteful number, since it uses less digits than its factorization.

243212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528 (or 1526 counting only the distinct ones).

The product of its digits is 96, while the sum is 14.

The square root of 243212 is about 493.1652866940. The cubic root of 243212 is about 62.4206566501.

Adding to 243212 its reverse (212342), we get a palindrome (455554).

The spelling of 243212 in words is "two hundred forty-three thousand, two hundred twelve", and thus it is an iban number.