243231242311320 has 128 divisors (see below), whose sum is σ = 806208926077440. Its totient is φ = 58392086804480.

The previous prime is 243231242311237. The next prime is 243231242311333. The reversal of 243231242311320 is 23113242132342.

It is a happy number.

It is a super-2 number, since 2×243231242311320² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2591931366 + ... + 2592025205.

It is an arithmetic number, because the mean of its divisors is an integer number (6298507234980).

Almost surely, 2^{243231242311320} is an apocalyptic number.

243231242311320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243231242311320 is an abundant number, since it is smaller than the sum of its proper divisors (562977683766120).

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

243231242311320 is a wasteful number, since it uses less digits than its factorization.

243231242311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183956625 (or 5183956621 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 243231242311320 its reverse (23113242132342), we get a palindrome (266344484443662).

The spelling of 243231242311320 in words is "two hundred forty-three trillion, two hundred thirty-one billion, two hundred forty-two million, three hundred eleven thousand, three hundred twenty".