243234534020 has 24 divisors (see below), whose sum is σ = 537676339200. Its totient is φ = 92173086432.

The previous prime is 243234534019. The next prime is 243234534041. The reversal of 243234534020 is 20435432342.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320045060 + ... + 320045819.

It is an arithmetic number, because the mean of its divisors is an integer number (22403180800).

Almost surely, 2^243234534020 is an apocalyptic number.

243234534020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243234534020 is an abundant number, since it is smaller than the sum of its proper divisors (294441805180).

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

243234534020 is a wasteful number, since it uses less digits than its factorization.

243234534020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640090907 (or 640090905 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 243234534020 its reverse (20435432342), we get a palindrome (263669966362).

The spelling of 243234534020 in words is "two hundred forty-three billion, two hundred thirty-four million, five hundred thirty-four thousand, twenty".