243622247 has 8 divisors (see below), whose sum is σ = 267967632. Its totient is φ = 221473560.

The previous prime is 243622231. The next prime is 243622277. The reversal of 243622247 is 742226342.

243622247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243622247 - 2⁴ = 243622231 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 (243622277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90188 + ... + 92849.

It is an arithmetic number, because the mean of its divisors is an integer number (33495954).

Almost surely, 2^243622247 is an apocalyptic number.

243622247 is a deficient number, since it is larger than the sum of its proper divisors (24345385).

243622247 is an equidigital number, since it uses as much as digits as its factorization.

243622247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183070 (or 183048 counting only the distinct ones).

The product of its digits is 32256, while the sum is 32.

The square root of 243622247 is about 15608.4030893618. The cubic root of 243622247 is about 624.5573373270.

Adding to 243622247 its reverse (742226342), we get a palindrome (985848589).

The spelling of 243622247 in words is "two hundred forty-three million, six hundred twenty-two thousand, two hundred forty-seven".