531871 has 2 divisors, whose sum is σ = 531872. Its totient is φ = 531870.

The previous prime is 531863. The next prime is 531877. The reversal of 531871 is 178135.

531871 is nontrivially palindromic in base 7.

531871 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531871 - 2³ = 531863 is a prime.

531871 is an undulating number in base 7.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265935 + 265936.

It is an arithmetic number, because the mean of its divisors is an integer number (265936).

2⁵³¹⁸⁷¹ is an apocalyptic number.

531871 is a deficient number, since it is larger than the sum of its proper divisors (1).

531871 is an equidigital number, since it uses as much as digits as its factorization.

531871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 25.

The square root of 531871 is about 729.2948649209. The cubic root of 531871 is about 81.0218403738.

The spelling of 531871 in words is "five hundred thirty-one thousand, eight hundred seventy-one".