531324323 has 4 divisors (see below), whose sum is σ = 540329880. Its totient is φ = 522318768.

The previous prime is 531324319. The next prime is 531324377. The reversal of 531324323 is 323423135.

It is a happy number.

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 531324323 - 2² = 531324319 is a prime.

It is a super-4 number, since 4×531324323⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531324292 and 531324301.

It is not an unprimeable number, because it can be changed into a prime (531324623) 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, 4502690 + ... + 4502807.

It is an arithmetic number, because the mean of its divisors is an integer number (135082470).

Almost surely, 2^531324323 is an apocalyptic number.

531324323 is a deficient number, since it is larger than the sum of its proper divisors (9005557).

531324323 is an equidigital number, since it uses as much as digits as its factorization.

531324323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9005556.

The product of its digits is 6480, while the sum is 26.

The square root of 531324323 is about 23050.4733790870. The cubic root of 531324323 is about 809.9407176041.

Adding to 531324323 its reverse (323423135), we get a palindrome (854747458).

The spelling of 531324323 in words is "five hundred thirty-one million, three hundred twenty-four thousand, three hundred twenty-three".