531001421124 has 24 divisors (see below), whose sum is σ = 1239015132768. Its totient is φ = 176998785600.

The previous prime is 531001421101. The next prime is 531001421177. The reversal of 531001421124 is 421124100135.

It is a junction number, because it is equal to n+sod(n) for n = 531001421094 and 531001421103.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2218699 + ... + 2446349.

It is an arithmetic number, because the mean of its divisors is an integer number (51625630532).

Almost surely, 2^531001421124 is an apocalyptic number.

It is an amenable number.

531001421124 is an abundant number, since it is smaller than the sum of its proper divisors (708013711644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531001421124 is a wasteful number, since it uses less digits than its factorization.

531001421124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422035 (or 422033 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 531001421124 its reverse (421124100135), we get a palindrome (952125521259).

The spelling of 531001421124 in words is "five hundred thirty-one billion, one million, four hundred twenty-one thousand, one hundred twenty-four".