531334240 has 72 divisors (see below), whose sum is σ = 1324965600. Its totient is φ = 201325824.

The previous prime is 531334231. The next prime is 531334241. The reversal of 531334240 is 42433135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531334241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53161 + ... + 62359.

It is an arithmetic number, because the mean of its divisors is an integer number (18402300).

Almost surely, 2^531334240 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 531334240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662482800).

531334240 is an abundant number, since it is smaller than the sum of its proper divisors (793631360).

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

531334240 is a wasteful number, since it uses less digits than its factorization.

531334240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9252 (or 9225 counting only the distinct ones).

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

The square root of 531334240 is about 23050.6884929713. The cubic root of 531334240 is about 809.9457566683.

Adding to 531334240 its reverse (42433135), we get a palindrome (573767375).

The spelling of 531334240 in words is "five hundred thirty-one million, three hundred thirty-four thousand, two hundred forty".