531880931 has 2 divisors, whose sum is σ = 531880932. Its totient is φ = 531880930.

The previous prime is 531880913. The next prime is 531880961. The reversal of 531880931 is 139088135.

Together with previous prime (531880913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531880931 - 2¹⁴ = 531864547 is a prime.

It is a super-2 number, since 2×531880931² = 565794649522853522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531880961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265940465 + 265940466.

It is an arithmetic number, because the mean of its divisors is an integer number (265940466).

Almost surely, 2^531880931 is an apocalyptic number.

531880931 is a deficient number, since it is larger than the sum of its proper divisors (1).

531880931 is an equidigital number, since it uses as much as digits as its factorization.

531880931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 531880931 is about 23062.5438969772. The cubic root of 531880931 is about 810.2234464579.

The spelling of 531880931 in words is "five hundred thirty-one million, eight hundred eighty thousand, nine hundred thirty-one".