531542112323 has 4 divisors (see below), whose sum is σ = 535109509200. Its totient is φ = 527974715448.

The previous prime is 531542112313. The next prime is 531542112347. The reversal of 531542112323 is 323211245135.

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 531542112323 - 2¹⁶ = 531542046787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531542112323.

It is not an unprimeable number, because it can be changed into a prime (531542112313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783698215 + ... + 1783698512.

It is an arithmetic number, because the mean of its divisors is an integer number (133777377300).

Almost surely, 2^531542112323 is an apocalyptic number.

531542112323 is a deficient number, since it is larger than the sum of its proper divisors (3567396877).

531542112323 is a wasteful number, since it uses less digits than its factorization.

531542112323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567396876.

The product of its digits is 21600, while the sum is 32.

Adding to 531542112323 its reverse (323211245135), we get a palindrome (854753357458).

The spelling of 531542112323 in words is "five hundred thirty-one billion, five hundred forty-two million, one hundred twelve thousand, three hundred twenty-three".