243401115040 has 24 divisors (see below), whose sum is σ = 575035134660. Its totient is φ = 97360445952.

The previous prime is 243401115007. The next prime is 243401115043. The reversal of 243401115040 is 40511104342.

243401115040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 200557082896 + 42844032144 = 447836^2 + 206988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243401114996 and 243401115014.

It is not an unprimeable number, because it can be changed into a prime (243401115043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760628325 + ... + 760628644.

Almost surely, 2^243401115040 is an apocalyptic number.

243401115040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243401115040 is an abundant number, since it is smaller than the sum of its proper divisors (331634019620).

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

243401115040 is a wasteful number, since it uses less digits than its factorization.

243401115040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521256984 (or 1521256976 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 243401115040 its reverse (40511104342), we get a palindrome (283912219382).

The spelling of 243401115040 in words is "two hundred forty-three billion, four hundred one million, one hundred fifteen thousand, forty".