243244101 has 4 divisors (see below), whose sum is σ = 324325472. Its totient is φ = 162162732.

The previous prime is 243244093. The next prime is 243244121. The reversal of 243244101 is 101442342.

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 not a de Polignac number, because 243244101 - 2³ = 243244093 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 (243244121) 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 3 ways as a sum of consecutive naturals, for example, 40540681 + ... + 40540686.

It is an arithmetic number, because the mean of its divisors is an integer number (81081368).

Almost surely, 2^243244101 is an apocalyptic number.

It is an amenable number.

243244101 is a deficient number, since it is larger than the sum of its proper divisors (81081371).

243244101 is an equidigital number, since it uses as much as digits as its factorization.

243244101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81081370.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 243244101 is about 15596.2848460779. The cubic root of 243244101 is about 624.2340278288.

Adding to 243244101 its reverse (101442342), we get a palindrome (344686443).

The spelling of 243244101 in words is "two hundred forty-three million, two hundred forty-four thousand, one hundred one".