531332440 has 32 divisors (see below), whose sum is σ = 1204922880. Its totient is φ = 210857472.

The previous prime is 531332437. The next prime is 531332447. The reversal of 531332440 is 44233135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531332447) by changing a digit.

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, 47217 + ... + 57376.

It is an arithmetic number, because the mean of its divisors is an integer number (37653840).

Almost surely, 2^531332440 is an apocalyptic number.

It is an amenable number.

531332440 is an abundant number, since it is smaller than the sum of its proper divisors (673590440).

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

531332440 is a wasteful number, since it uses less digits than its factorization.

531332440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104731 (or 104727 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 531332440 is about 23050.6494485513. The cubic root of 531332440 is about 809.9448420501.

Adding to 531332440 its reverse (44233135), we get a palindrome (575565575).

The spelling of 531332440 in words is "five hundred thirty-one million, three hundred thirty-two thousand, four hundred forty".