243319422873 has 4 divisors (see below), whose sum is σ = 324425897168. Its totient is φ = 162212948580.

The previous prime is 243319422851. The next prime is 243319422881. The reversal of 243319422873 is 378224913342.

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 243319422873 - 2¹⁷ = 243319291801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243319427873) 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, 40553237143 + ... + 40553237148.

It is an arithmetic number, because the mean of its divisors is an integer number (81106474292).

Almost surely, 2^243319422873 is an apocalyptic number.

It is an amenable number.

243319422873 is a deficient number, since it is larger than the sum of its proper divisors (81106474295).

243319422873 is an equidigital number, since it uses as much as digits as its factorization.

243319422873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81106474294.

The product of its digits is 1741824, while the sum is 48.

The spelling of 243319422873 in words is "two hundred forty-three billion, three hundred nineteen million, four hundred twenty-two thousand, eight hundred seventy-three".