243442131340403 has 16 divisors (see below), whose sum is σ = 254222266887936. Its totient is φ = 232678347850080.

The previous prime is 243442131340381. The next prime is 243442131340417. The reversal of 243442131340403 is 304043131244342.

243442131340403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 243442131340403 - 2⁸ = 243442131340147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243442131340483) 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, 244190876 + ... + 245185782.

It is an arithmetic number, because the mean of its divisors is an integer number (15888891680496).

Almost surely, 2^{243442131340403} is an apocalyptic number.

243442131340403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

243442131340403 is a deficient number, since it is larger than the sum of its proper divisors (10780135547533).

243442131340403 is a wasteful number, since it uses less digits than its factorization.

243442131340403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003114.

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 243442131340403 its reverse (304043131244342), we get a palindrome (547485262584745).

The spelling of 243442131340403 in words is "two hundred forty-three trillion, four hundred forty-two billion, one hundred thirty-one million, three hundred forty thousand, four hundred three".