243221414 has 16 divisors (see below), whose sum is σ = 386671968. Its totient is φ = 114344832.

The previous prime is 243221411. The next prime is 243221437. The reversal of 243221414 is 414122342.

It is a self number, because there is not a number n which added to its sum of digits gives 243221414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243221411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39167 + ... + 44949.

It is an arithmetic number, because the mean of its divisors is an integer number (24166998).

Almost surely, 2^243221414 is an apocalyptic number.

243221414 is a deficient number, since it is larger than the sum of its proper divisors (143450554).

243221414 is a wasteful number, since it uses less digits than its factorization.

243221414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7039.

The product of its digits is 1536, while the sum is 23.

The square root of 243221414 is about 15595.5575084702. The cubic root of 243221414 is about 624.2146201122.

Adding to 243221414 its reverse (414122342), we get a palindrome (657343756).

The spelling of 243221414 in words is "two hundred forty-three million, two hundred twenty-one thousand, four hundred fourteen".