243123343225 has 48 divisors (see below), whose sum is σ = 346306192128. Its totient is φ = 165860029440.

The previous prime is 243123343201. The next prime is 243123343231. The reversal of 243123343225 is 522343321342.

It is not a de Polignac number, because 243123343225 - 2²³ = 243114954617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85095997 + ... + 85098853.

It is an arithmetic number, because the mean of its divisors is an integer number (7214712336).

Almost surely, 2^243123343225 is an apocalyptic number.

243123343225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243123343225 is a deficient number, since it is larger than the sum of its proper divisors (103182848903).

243123343225 is a wasteful number, since it uses less digits than its factorization.

243123343225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194 (or 5189 counting only the distinct ones).

The product of its digits is 103680, while the sum is 34.

Adding to 243123343225 its reverse (522343321342), we get a palindrome (765466664567).

The spelling of 243123343225 in words is "two hundred forty-three billion, one hundred twenty-three million, three hundred forty-three thousand, two hundred twenty-five".