243111243040 has 24 divisors (see below), whose sum is σ = 574350312060. Its totient is φ = 97244497152.

The previous prime is 243111243029. The next prime is 243111243041. The reversal of 243111243040 is 40342111342.

It can be written as a sum of positive squares in 2 ways, for example, as 234244384144 + 8866858896 = 483988^2 + 94164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243111242996 and 243111243014.

It is not an unprimeable number, because it can be changed into a prime (243111243041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759722475 + ... + 759722794.

Almost surely, 2^243111243040 is an apocalyptic number.

243111243040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243111243040 is an abundant number, since it is smaller than the sum of its proper divisors (331239069020).

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

243111243040 is a wasteful number, since it uses less digits than its factorization.

243111243040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519445284 (or 1519445276 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 243111243040 its reverse (40342111342), we get a palindrome (283453354382).

The spelling of 243111243040 in words is "two hundred forty-three billion, one hundred eleven million, two hundred forty-three thousand, forty".