243341423123 has 4 divisors (see below), whose sum is σ = 243769088760. Its totient is φ = 242913757488.

The previous prime is 243341423119. The next prime is 243341423131. The reversal of 243341423123 is 321324143342.

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 243341423123 - 2² = 243341423119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243341423123.

It is not an unprimeable number, because it can be changed into a prime (243341420123) 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, 213831965 + ... + 213833102.

It is an arithmetic number, because the mean of its divisors is an integer number (60942272190).

Almost surely, 2^243341423123 is an apocalyptic number.

243341423123 is a deficient number, since it is larger than the sum of its proper divisors (427665637).

243341423123 is an equidigital number, since it uses as much as digits as its factorization.

243341423123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427665636.

The product of its digits is 41472, while the sum is 32.

Adding to 243341423123 its reverse (321324143342), we get a palindrome (564665566465).

The spelling of 243341423123 in words is "two hundred forty-three billion, three hundred forty-one million, four hundred twenty-three thousand, one hundred twenty-three".