243112304032320 has 56 divisors (see below), whose sum is σ = 771881565305664. Its totient is φ = 64829947741696.

The previous prime is 243112304032267. The next prime is 243112304032321. The reversal of 243112304032320 is 23230403211342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (243112304032321) 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, 126620990724 + ... + 126620992643.

Almost surely, 2^{243112304032320} is an apocalyptic number.

243112304032320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243112304032320 is an abundant number, since it is smaller than the sum of its proper divisors (528769261273344).

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

243112304032320 is a wasteful number, since it uses less digits than its factorization.

243112304032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253241983387 (or 253241983377 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 243112304032320 its reverse (23230403211342), we get a palindrome (266342707243662).

The spelling of 243112304032320 in words is "two hundred forty-three trillion, one hundred twelve billion, three hundred four million, thirty-two thousand, three hundred twenty".