531304831 has 2 divisors, whose sum is σ = 531304832. Its totient is φ = 531304830.

The previous prime is 531304819. The next prime is 531304871. The reversal of 531304831 is 138403135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531304831 - 2²³ = 522916223 is a prime.

It is a super-2 number, since 2×531304831² = 564569646887877122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531304831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531304801) 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 as a sum of consecutive naturals, namely, 265652415 + 265652416.

It is an arithmetic number, because the mean of its divisors is an integer number (265652416).

Almost surely, 2^531304831 is an apocalyptic number.

531304831 is a deficient number, since it is larger than the sum of its proper divisors (1).

531304831 is an equidigital number, since it uses as much as digits as its factorization.

531304831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 531304831 is about 23050.0505639359. The cubic root of 531304831 is about 809.9308130713.

Adding to 531304831 its reverse (138403135), we get a palindrome (669707966).

The spelling of 531304831 in words is "five hundred thirty-one million, three hundred four thousand, eight hundred thirty-one".