243203232120 has 64 divisors (see below), whose sum is σ = 741975984000. Its totient is φ = 63754969728.

The previous prime is 243203232119. The next prime is 243203232131. The reversal of 243203232120 is 21232302342.

It is a super-2 number, since 2×243203232120² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17168290 + ... + 17182449.

It is an arithmetic number, because the mean of its divisors is an integer number (11593374750).

Almost surely, 2^243203232120 is an apocalyptic number.

243203232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243203232120 is an abundant number, since it is smaller than the sum of its proper divisors (498772751880).

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

243203232120 is a wasteful number, since it uses less digits than its factorization.

243203232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34350812 (or 34350808 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 243203232120 its reverse (21232302342), we get a palindrome (264435534462).

The spelling of 243203232120 in words is "two hundred forty-three billion, two hundred three million, two hundred thirty-two thousand, one hundred twenty".