243204310123 has 8 divisors (see below), whose sum is σ = 244770828048. Its totient is φ = 241638013344.

The previous prime is 243204310121. The next prime is 243204310171. The reversal of 243204310123 is 321013402342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243204310123 - 2¹ = 243204310121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243204310121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2542440 + ... + 2636362.

It is an arithmetic number, because the mean of its divisors is an integer number (30596353506).

Almost surely, 2^243204310123 is an apocalyptic number.

243204310123 is a deficient number, since it is larger than the sum of its proper divisors (1566517925).

243204310123 is a wasteful number, since it uses less digits than its factorization.

243204310123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110573.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 243204310123 its reverse (321013402342), we get a palindrome (564217712465).

The spelling of 243204310123 in words is "two hundred forty-three billion, two hundred four million, three hundred ten thousand, one hundred twenty-three".