243403222 has 4 divisors (see below), whose sum is σ = 365104836. Its totient is φ = 121701610.

The previous prime is 243403211. The next prime is 243403241. The reversal of 243403222 is 222304342.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 243403193 and 243403202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60850804 + ... + 60850807.

It is an arithmetic number, because the mean of its divisors is an integer number (91276209).

Almost surely, 2^243403222 is an apocalyptic number.

243403222 is a deficient number, since it is larger than the sum of its proper divisors (121701614).

243403222 is a wasteful number, since it uses less digits than its factorization.

243403222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121701613.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 243403222 is about 15601.3852590083. The cubic root of 243403222 is about 624.3701148448.

Adding to 243403222 its reverse (222304342), we get a palindrome (465707564).

The spelling of 243403222 in words is "two hundred forty-three million, four hundred three thousand, two hundred twenty-two".