243622101 has 4 divisors (see below), whose sum is σ = 324829472. Its totient is φ = 162414732.

The previous prime is 243622063. The next prime is 243622129. The reversal of 243622101 is 101226342.

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 243622101 - 2²¹ = 241524949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243622901) 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, 40603681 + ... + 40603686.

It is an arithmetic number, because the mean of its divisors is an integer number (81207368).

Almost surely, 2^243622101 is an apocalyptic number.

It is an amenable number.

243622101 is a deficient number, since it is larger than the sum of its proper divisors (81207371).

243622101 is an equidigital number, since it uses as much as digits as its factorization.

243622101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81207370.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 243622101 is about 15608.3984123932. The cubic root of 243622101 is about 624.5572125636.

Adding to 243622101 its reverse (101226342), we get a palindrome (344848443).

The spelling of 243622101 in words is "two hundred forty-three million, six hundred twenty-two thousand, one hundred one".