231565423226 has 32 divisors (see below), whose sum is σ = 379285934400. Its totient is φ = 105906327408.

The previous prime is 231565423163. The next prime is 231565423241. The reversal of 231565423226 is 622324565132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106781 + ... + 688863.

It is an arithmetic number, because the mean of its divisors is an integer number (11852685450).

Almost surely, 2^231565423226 is an apocalyptic number.

231565423226 is a deficient number, since it is larger than the sum of its proper divisors (147720511174).

231565423226 is an equidigital number, since it uses as much as digits as its factorization.

231565423226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582171 (or 582133 counting only the distinct ones).

The product of its digits is 518400, while the sum is 41.

Adding to 231565423226 its reverse (622324565132), we get a palindrome (853889988358).

The spelling of 231565423226 in words is "two hundred thirty-one billion, five hundred sixty-five million, four hundred twenty-three thousand, two hundred twenty-six".