243421534320 has 40 divisors (see below), whose sum is σ = 754606757136. Its totient is φ = 64912409088.

The previous prime is 243421534297. The next prime is 243421534327. The reversal of 243421534320 is 23435124342.

243421534320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243421534327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507127957 + ... + 507128436.

Almost surely, 2^243421534320 is an apocalyptic number.

243421534320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243421534320 is an abundant number, since it is smaller than the sum of its proper divisors (511185222816).

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

243421534320 is a wasteful number, since it uses less digits than its factorization.

243421534320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014256409 (or 1014256403 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 243421534320 its reverse (23435124342), we get a palindrome (266856658662).

The spelling of 243421534320 in words is "two hundred forty-three billion, four hundred twenty-one million, five hundred thirty-four thousand, three hundred twenty".