243313444 has 24 divisors (see below), whose sum is σ = 469115136. Its totient is φ = 109500000.

The previous prime is 243313423. The next prime is 243313457. The reversal of 243313444 is 444313342.

It is a super-2 number, since 2×243313444² = 118402864062282272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22932 + ... + 31819.

It is an arithmetic number, because the mean of its divisors is an integer number (19546464).

Almost surely, 2^243313444 is an apocalyptic number.

It is an amenable number.

243313444 is a deficient number, since it is larger than the sum of its proper divisors (225801692).

243313444 is a wasteful number, since it uses less digits than its factorization.

243313444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54867 (or 54865 counting only the distinct ones).

The product of its digits is 13824, while the sum is 28.

The square root of 243313444 is about 15598.5077491406. The cubic root of 243313444 is about 624.2933401922.

Adding to 243313444 its reverse (444313342), we get a palindrome (687626786).

The spelling of 243313444 in words is "two hundred forty-three million, three hundred thirteen thousand, four hundred forty-four".