243123504011 has 8 divisors (see below), whose sum is σ = 251926625280. Its totient is φ = 234463523112.

The previous prime is 243123503983. The next prime is 243123504073. The reversal of 243123504011 is 110405321342.

It is a happy number.

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 243123504011 - 2³⁰ = 242049762187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243123504311) 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, 35781635 + ... + 35788428.

It is an arithmetic number, because the mean of its divisors is an integer number (31490828160).

Almost surely, 2^243123504011 is an apocalyptic number.

243123504011 is a deficient number, since it is larger than the sum of its proper divisors (8803121269).

243123504011 is an equidigital number, since it uses as much as digits as its factorization.

243123504011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71570185.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 243123504011 its reverse (110405321342), we get a palindrome (353528825353).

The spelling of 243123504011 in words is "two hundred forty-three billion, one hundred twenty-three million, five hundred four thousand, eleven".