531108823 has 4 divisors (see below), whose sum is σ = 606981520. Its totient is φ = 455236128.

The previous prime is 531108817. The next prime is 531108829. The reversal of 531108823 is 328801135.

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

It is an interprime number because it is at equal distance from previous prime (531108817) and next prime (531108829).

It is a cyclic number.

It is not a de Polignac number, because 531108823 - 2¹³ = 531100631 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 (531108829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37936338 + ... + 37936351.

It is an arithmetic number, because the mean of its divisors is an integer number (151745380).

Almost surely, 2^531108823 is an apocalyptic number.

531108823 is a deficient number, since it is larger than the sum of its proper divisors (75872697).

531108823 is an equidigital number, since it uses as much as digits as its factorization.

531108823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75872696.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 531108823 is about 23045.7983806159. The cubic root of 531108823 is about 809.8312014261.

Adding to 531108823 its reverse (328801135), we get a palindrome (859909958).

The spelling of 531108823 in words is "five hundred thirty-one million, one hundred eight thousand, eight hundred twenty-three".