243240224321 has 8 divisors (see below), whose sum is σ = 257976803904. Its totient is φ = 228850387920.

The previous prime is 243240224267. The next prime is 243240224327. The reversal of 243240224321 is 123422042342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243240224321 - 2²² = 243236030017 is a prime.

It is a super-2 number, since 2×243240224321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243240224327) 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, 86684351 + ... + 86687156.

It is an arithmetic number, because the mean of its divisors is an integer number (32247100488).

Almost surely, 2^243240224321 is an apocalyptic number.

It is an amenable number.

243240224321 is a deficient number, since it is larger than the sum of its proper divisors (14736579583).

243240224321 is a wasteful number, since it uses less digits than its factorization.

243240224321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173371591.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 243240224321 its reverse (123422042342), we get a palindrome (366662266663).

The spelling of 243240224321 in words is "two hundred forty-three billion, two hundred forty million, two hundred twenty-four thousand, three hundred twenty-one".