243105243001 has 4 divisors (see below), whose sum is σ = 249675655012. Its totient is φ = 236534830992.

The previous prime is 243105242999. The next prime is 243105243041. The reversal of 243105243001 is 100342501342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 236122133776 + 6983109225 = 485924^2 + 83565^2 .

It is a cyclic number.

It is not a de Polignac number, because 243105243001 - 2¹ = 243105242999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243105243041) 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, 3285205950 + ... + 3285206023.

It is an arithmetic number, because the mean of its divisors is an integer number (62418913753).

Almost surely, 2^243105243001 is an apocalyptic number.

It is an amenable number.

243105243001 is a deficient number, since it is larger than the sum of its proper divisors (6570412011).

243105243001 is an equidigital number, since it uses as much as digits as its factorization.

243105243001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570412010.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 243105243001 its reverse (100342501342), we get a palindrome (343447744343).

The spelling of 243105243001 in words is "two hundred forty-three billion, one hundred five million, two hundred forty-three thousand, one".