243331424 has 24 divisors (see below), whose sum is σ = 547496208. Its totient is φ = 104284800.

The previous prime is 243331409. The next prime is 243331441. The reversal of 243331424 is 424133342.

It is a junction number, because it is equal to n+sod(n) for n = 243331393 and 243331402.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 542927 + ... + 543374.

It is an arithmetic number, because the mean of its divisors is an integer number (22812342).

Almost surely, 2^243331424 is an apocalyptic number.

It is an amenable number.

243331424 is an abundant number, since it is smaller than the sum of its proper divisors (304164784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243331424 is a wasteful number, since it uses less digits than its factorization.

243331424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086318 (or 1086310 counting only the distinct ones).

The product of its digits is 6912, while the sum is 26.

The square root of 243331424 is about 15599.0840756757. The cubic root of 243331424 is about 624.3087175008.

Adding to 243331424 its reverse (424133342), we get a palindrome (667464766).

The spelling of 243331424 in words is "two hundred forty-three million, three hundred thirty-one thousand, four hundred twenty-four".