243104101 has 4 divisors (see below), whose sum is σ = 243177804. Its totient is φ = 243030400.

The previous prime is 243104083. The next prime is 243104137. The reversal of 243104101 is 101401342.

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 172291876 + 70812225 = 13126^2 + 8415^2 .

It is a cyclic number.

It is not a de Polignac number, because 243104101 - 2¹¹ = 243102053 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 (243104401) 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, 31660 + ... + 38581.

It is an arithmetic number, because the mean of its divisors is an integer number (60794451).

Almost surely, 2^243104101 is an apocalyptic number.

It is an amenable number.

243104101 is a deficient number, since it is larger than the sum of its proper divisors (73703).

243104101 is an equidigital number, since it uses as much as digits as its factorization.

243104101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73702.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 243104101 is about 15591.7959517177. The cubic root of 243104101 is about 624.1142448134.

Adding to 243104101 its reverse (101401342), we get a palindrome (344505443).

The spelling of 243104101 in words is "two hundred forty-three million, one hundred four thousand, one hundred one".