243235315220 has 48 divisors (see below), whose sum is σ = 514403568000. Its totient is φ = 96607082880.

The previous prime is 243235315207. The next prime is 243235315229. The reversal of 243235315220 is 22513532342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243235315229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9496391 + ... + 9521969.

It is an arithmetic number, because the mean of its divisors is an integer number (10716741000).

Almost surely, 2^243235315220 is an apocalyptic number.

243235315220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243235315220 is an abundant number, since it is smaller than the sum of its proper divisors (271168252780).

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

243235315220 is a wasteful number, since it uses less digits than its factorization.

243235315220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28928 (or 28926 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 243235315220 its reverse (22513532342), we get a palindrome (265748847562).

The spelling of 243235315220 in words is "two hundred forty-three billion, two hundred thirty-five million, three hundred fifteen thousand, two hundred twenty".