243115436101 has 4 divisors (see below), whose sum is σ = 243119037600. Its totient is φ = 243111834604.

The previous prime is 243115436033. The next prime is 243115436141. The reversal of 243115436101 is 101634511342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243115436101 - 2²³ = 243107047493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243115436141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1697521 + ... + 1835158.

It is an arithmetic number, because the mean of its divisors is an integer number (60779759400).

Almost surely, 2^243115436101 is an apocalyptic number.

It is an amenable number.

243115436101 is a deficient number, since it is larger than the sum of its proper divisors (3601499).

243115436101 is an equidigital number, since it uses as much as digits as its factorization.

243115436101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601498.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 243115436101 its reverse (101634511342), we get a palindrome (344749947443).

The spelling of 243115436101 in words is "two hundred forty-three billion, one hundred fifteen million, four hundred thirty-six thousand, one hundred one".