531040432 has 40 divisors (see below), whose sum is σ = 1112272560. Its totient is φ = 244158720.

The previous prime is 531040429. The next prime is 531040439. The reversal of 531040432 is 234040135.

It is not an unprimeable number, because it can be changed into a prime (531040439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51207 + ... + 60697.

It is an arithmetic number, because the mean of its divisors is an integer number (27806814).

Almost surely, 2^531040432 is an apocalyptic number.

531040432 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531040432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556136280).

531040432 is an abundant number, since it is smaller than the sum of its proper divisors (581232128).

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

531040432 is a wasteful number, since it uses less digits than its factorization.

531040432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9781 (or 9775 counting only the distinct ones).

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

The square root of 531040432 is about 23044.3145265812. The cubic root of 531040432 is about 809.7964392199.

Adding to 531040432 its reverse (234040135), we get a palindrome (765080567).

The spelling of 531040432 in words is "five hundred thirty-one million, forty thousand, four hundred thirty-two".