531340624 has 40 divisors (see below), whose sum is σ = 1085907680. Its totient is φ = 251164800.

The previous prime is 531340613. The next prime is 531340631. The reversal of 531340624 is 426043135.

It is a junction number, because it is equal to n+sod(n) for n = 531340592 and 531340601.

It is a congruent number.

It is an unprimeable number.

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, 172054 + ... + 175114.

It is an arithmetic number, because the mean of its divisors is an integer number (27147692).

Almost surely, 2^531340624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531340624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542953840).

531340624 is an abundant number, since it is smaller than the sum of its proper divisors (554567056).

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

531340624 is a wasteful number, since it uses less digits than its factorization.

531340624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659 (or 3653 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 531340624 is about 23050.8269699809. The cubic root of 531340624 is about 809.9490004978.

Adding to 531340624 its reverse (426043135), we get a palindrome (957383759).

The spelling of 531340624 in words is "five hundred thirty-one million, three hundred forty thousand, six hundred twenty-four".