243105405011 has 8 divisors (see below), whose sum is σ = 277840605024. Its totient is φ = 208371669120.

The previous prime is 243105405001. The next prime is 243105405091. The reversal of 243105405011 is 110504501342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243105405011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243105405001) 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 7 ways as a sum of consecutive naturals, for example, 16421 + ... + 697481.

It is an arithmetic number, because the mean of its divisors is an integer number (34730075628).

Almost surely, 2^243105405011 is an apocalyptic number.

243105405011 is a deficient number, since it is larger than the sum of its proper divisors (34735200013).

243105405011 is an equidigital number, since it uses as much as digits as its factorization.

243105405011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732061.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 243105405011 its reverse (110504501342), we get a palindrome (353609906353).

The spelling of 243105405011 in words is "two hundred forty-three billion, one hundred five million, four hundred five thousand, eleven".