243003311444 has 12 divisors (see below), whose sum is σ = 425442901044. Its totient is φ = 121448196864.

The previous prime is 243003311431. The next prime is 243003311471. The reversal of 243003311444 is 444113300342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 232729056400 + 10274255044 = 482420^2 + 101362^2 .

It is a super-2 number, since 2×243003311444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13354487 + ... + 13372670.

It is an arithmetic number, because the mean of its divisors is an integer number (35453575087).

Almost surely, 2^243003311444 is an apocalyptic number.

It is an amenable number.

243003311444 is a deficient number, since it is larger than the sum of its proper divisors (182439589600).

243003311444 is a wasteful number, since it uses less digits than its factorization.

243003311444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26729434 (or 26729432 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 243003311444 its reverse (444113300342), we get a palindrome (687116611786).

The spelling of 243003311444 in words is "two hundred forty-three billion, three million, three hundred eleven thousand, four hundred forty-four".