243220244 has 6 divisors (see below), whose sum is σ = 425635434. Its totient is φ = 121610120.

The previous prime is 243220231. The next prime is 243220249. The reversal of 243220244 is 442022342.

It can be written as a sum of positive squares in only one way, i.e., 148547344 + 94672900 = 12188^2 + 9730^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243220249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30402527 + ... + 30402534.

It is an arithmetic number, because the mean of its divisors is an integer number (70939239).

Almost surely, 2^243220244 is an apocalyptic number.

It is an amenable number.

243220244 is a deficient number, since it is larger than the sum of its proper divisors (182415190).

243220244 is a wasteful number, since it uses less digits than its factorization.

243220244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60805065 (or 60805063 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 243220244 is about 15595.5199977429. The cubic root of 243220244 is about 624.2136191967.

Adding to 243220244 its reverse (442022342), we get a palindrome (685242586).

The spelling of 243220244 in words is "two hundred forty-three million, two hundred twenty thousand, two hundred forty-four".