243043966 has 8 divisors (see below), whose sum is σ = 397708344. Its totient is φ = 110474520.

The previous prime is 243043963. The next prime is 243044017. The reversal of 243043966 is 669340342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243043961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5523705 + ... + 5523748.

It is an arithmetic number, because the mean of its divisors is an integer number (49713543).

Almost surely, 2^243043966 is an apocalyptic number.

243043966 is a deficient number, since it is larger than the sum of its proper divisors (154664378).

243043966 is a wasteful number, since it uses less digits than its factorization.

243043966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11047466.

The product of its (nonzero) digits is 93312, while the sum is 37.

The square root of 243043966 is about 15589.8674144458. The cubic root of 243043966 is about 624.0627796112.

The spelling of 243043966 in words is "two hundred forty-three million, forty-three thousand, nine hundred sixty-six".