531124121 has 8 divisors (see below), whose sum is σ = 579576000. Its totient is φ = 482700240.

The previous prime is 531124109. The next prime is 531124151. The reversal of 531124121 is 121421135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 531124121 - 2²² = 526929817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531124093 and 531124102.

It is not an unprimeable number, because it can be changed into a prime (531124151) 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 7 ways as a sum of consecutive naturals, for example, 64295 + ... + 72083.

It is an arithmetic number, because the mean of its divisors is an integer number (72447000).

Almost surely, 2^531124121 is an apocalyptic number.

It is an amenable number.

531124121 is a deficient number, since it is larger than the sum of its proper divisors (48451879).

531124121 is a wasteful number, since it uses less digits than its factorization.

531124121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13999.

The product of its digits is 240, while the sum is 20.

The square root of 531124121 is about 23046.1302825442. The cubic root of 531124121 is about 809.8389767810.

Adding to 531124121 its reverse (121421135), we get a palindrome (652545256).

The spelling of 531124121 in words is "five hundred thirty-one million, one hundred twenty-four thousand, one hundred twenty-one".