531040431 has 8 divisors (see below), whose sum is σ = 732469680. Its totient is φ = 341819072.

The previous prime is 531040429. The next prime is 531040439. The reversal of 531040431 is 134040135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 531040431 - 2¹ = 531040429 is a prime.

It is a super-3 number, since 3×531040431³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 531040398 and 531040407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531040439) 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 7 ways as a sum of consecutive naturals, for example, 3051870 + ... + 3052043.

It is an arithmetic number, because the mean of its divisors is an integer number (91558710).

Almost surely, 2^531040431 is an apocalyptic number.

531040431 is a deficient number, since it is larger than the sum of its proper divisors (201429249).

531040431 is a wasteful number, since it uses less digits than its factorization.

531040431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6103945.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 531040431 is about 23044.3145048838. The cubic root of 531040431 is about 809.7964387116.

Adding to 531040431 its reverse (134040135), we get a palindrome (665080566).

The spelling of 531040431 in words is "five hundred thirty-one million, forty thousand, four hundred thirty-one".