243444242103 has 4 divisors (see below), whose sum is σ = 324592322808. Its totient is φ = 162296161400.

The previous prime is 243444242089. The next prime is 243444242143. The reversal of 243444242103 is 301242444342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243444242103 - 2⁸ = 243444241847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243444242143) 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, 40574040348 + ... + 40574040353.

It is an arithmetic number, because the mean of its divisors is an integer number (81148080702).

Almost surely, 2^243444242103 is an apocalyptic number.

243444242103 is a deficient number, since it is larger than the sum of its proper divisors (81148080705).

243444242103 is an equidigital number, since it uses as much as digits as its factorization.

243444242103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81148080704.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 243444242103 its reverse (301242444342), we get a palindrome (544686686445).

The spelling of 243444242103 in words is "two hundred forty-three billion, four hundred forty-four million, two hundred forty-two thousand, one hundred three".