531504320 has 112 divisors (see below), whose sum is σ = 1373355648. Its totient is φ = 195133440.

The previous prime is 531504317. The next prime is 531504329. The reversal of 531504320 is 23405135.

It is not an unprimeable number, because it can be changed into a prime (531504329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221849 + ... + 224231.

It is an arithmetic number, because the mean of its divisors is an integer number (12262104).

Almost surely, 2^531504320 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 531504320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686677824).

531504320 is an abundant number, since it is smaller than the sum of its proper divisors (841851328).

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

531504320 is a wasteful number, since it uses less digits than its factorization.

531504320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458 (or 2448 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 531504320 is about 23054.3774585218. The cubic root of 531504320 is about 810.0321686152.

Adding to 531504320 its reverse (23405135), we get a palindrome (554909455).

The spelling of 531504320 in words is "five hundred thirty-one million, five hundred four thousand, three hundred twenty".