243203612 has 12 divisors (see below), whose sum is σ = 430734696. Its totient is φ = 120136560.

The previous prime is 243203567. The next prime is 243203641. The reversal of 243203612 is 216302342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365939 + ... + 366602.

It is an arithmetic number, because the mean of its divisors is an integer number (35894558).

Almost surely, 2^243203612 is an apocalyptic number.

It is an amenable number.

243203612 is a deficient number, since it is larger than the sum of its proper divisors (187531084).

243203612 is a wasteful number, since it uses less digits than its factorization.

243203612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732628 (or 732626 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 243203612 is about 15594.9867585708. The cubic root of 243203612 is about 624.1993904502.

Adding to 243203612 its reverse (216302342), we get a palindrome (459505954).

The spelling of 243203612 in words is "two hundred forty-three million, two hundred three thousand, six hundred twelve".