531422320 has 240 divisors, whose sum is σ = 1512778176. Its totient is φ = 172339200.

The previous prime is 531422249. The next prime is 531422321. The reversal of 531422320 is 23224135.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 531422291 and 531422300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531422321) 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 47 ways as a sum of consecutive naturals, for example, 5159389 + ... + 5159491.

Almost surely, 2^531422320 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 531422320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756389088).

531422320 is an abundant number, since it is smaller than the sum of its proper divisors (981355856).

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

531422320 is a wasteful number, since it uses less digits than its factorization.

531422320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 531422320 is about 23052.5989857977. The cubic root of 531422320 is about 809.9905094656.

Adding to 531422320 its reverse (23224135), we get a palindrome (554646455).

The spelling of 531422320 in words is "five hundred thirty-one million, four hundred twenty-two thousand, three hundred twenty".