243023422209 has 4 divisors (see below), whose sum is σ = 324031229616. Its totient is φ = 162015614804.

The previous prime is 243023422207. The next prime is 243023422231. The reversal of 243023422209 is 902224320342.

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 a cyclic number.

It is not a de Polignac number, because 243023422209 - 2¹ = 243023422207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243023422209.

It is not an unprimeable number, because it can be changed into a prime (243023422207) 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, 40503903699 + ... + 40503903704.

It is an arithmetic number, because the mean of its divisors is an integer number (81007807404).

Almost surely, 2^243023422209 is an apocalyptic number.

It is an amenable number.

243023422209 is a deficient number, since it is larger than the sum of its proper divisors (81007807407).

243023422209 is an equidigital number, since it uses as much as digits as its factorization.

243023422209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81007807406.

The product of its (nonzero) digits is 41472, while the sum is 33.

The spelling of 243023422209 in words is "two hundred forty-three billion, twenty-three million, four hundred twenty-two thousand, two hundred nine".