243240352001 has 4 divisors (see below), whose sum is σ = 243534476592. Its totient is φ = 242946227412.

The previous prime is 243240351989. The next prime is 243240352079. The reversal of 243240352001 is 100253042342.

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 243240352001 - 2³⁰ = 242166610177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243240351001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147061055 + ... + 147062708.

It is an arithmetic number, because the mean of its divisors is an integer number (60883619148).

Almost surely, 2^243240352001 is an apocalyptic number.

It is an amenable number.

243240352001 is a deficient number, since it is larger than the sum of its proper divisors (294124591).

243240352001 is an equidigital number, since it uses as much as digits as its factorization.

243240352001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294124590.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 243240352001 its reverse (100253042342), we get a palindrome (343493394343).

The spelling of 243240352001 in words is "two hundred forty-three billion, two hundred forty million, three hundred fifty-two thousand, one".