231531542544223 has 4 divisors (see below), whose sum is σ = 231531593277600. Its totient is φ = 231531491810848.

The previous prime is 231531542544151. The next prime is 231531542544257. The reversal of 231531542544223 is 322445245135132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231531542544223 - 2¹⁷ = 231531542413151 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 (231531542544293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17761015 + ... + 27901912.

It is an arithmetic number, because the mean of its divisors is an integer number (57882898319400).

Almost surely, 2^{231531542544223} is an apocalyptic number.

231531542544223 is a deficient number, since it is larger than the sum of its proper divisors (50733377).

231531542544223 is an equidigital number, since it uses as much as digits as its factorization.

231531542544223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50733376.

The product of its digits is 3456000, while the sum is 46.

Adding to 231531542544223 its reverse (322445245135132), we get a palindrome (553976787679355).

The spelling of 231531542544223 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred forty-two million, five hundred forty-four thousand, two hundred twenty-three".