243032433321 has 4 divisors (see below), whose sum is σ = 324043244432. Its totient is φ = 162021622212.

The previous prime is 243032433251. The next prime is 243032433323. The reversal of 243032433321 is 123334230342.

243032433321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-243032433321 is a prime.

It is a super-2 number, since 2×243032433321² (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 (243032433323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40505405551 + ... + 40505405556.

It is an arithmetic number, because the mean of its divisors is an integer number (81010811108).

Almost surely, 2^243032433321 is an apocalyptic number.

It is an amenable number.

243032433321 is a deficient number, since it is larger than the sum of its proper divisors (81010811111).

243032433321 is an equidigital number, since it uses as much as digits as its factorization.

243032433321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81010811110.

The product of its (nonzero) digits is 31104, while the sum is 30.

Adding to 243032433321 its reverse (123334230342), we get a palindrome (366366663663).

The spelling of 243032433321 in words is "two hundred forty-three billion, thirty-two million, four hundred thirty-three thousand, three hundred twenty-one".