531124133 has 4 divisors (see below), whose sum is σ = 539831148. Its totient is φ = 522417120.

The previous prime is 531124109. The next prime is 531124151. The reversal of 531124133 is 331421135.

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

It can be written as a sum of positive squares in 2 ways, for example, as 177608929 + 353515204 = 13327^2 + 18802^2 .

It is a cyclic number.

It is not a de Polignac number, because 531124133 - 2²² = 526929829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531124099 and 531124108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531124163) 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, 4353416 + ... + 4353537.

It is an arithmetic number, because the mean of its divisors is an integer number (134957787).

Almost surely, 2^531124133 is an apocalyptic number.

It is an amenable number.

531124133 is a deficient number, since it is larger than the sum of its proper divisors (8707015).

531124133 is an equidigital number, since it uses as much as digits as its factorization.

531124133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8707014.

The product of its digits is 1080, while the sum is 23.

The square root of 531124133 is about 23046.1305428916. The cubic root of 531124133 is about 809.8389828800.

Adding to 531124133 its reverse (331421135), we get a palindrome (862545268).

The spelling of 531124133 in words is "five hundred thirty-one million, one hundred twenty-four thousand, one hundred thirty-three".