531071 has 2 divisors, whose sum is σ = 531072. Its totient is φ = 531070.

The previous prime is 531043. The next prime is 531079. The reversal of 531071 is 170135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531071 - 2¹⁸ = 268927 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531079) 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, 265535 + 265536.

It is an arithmetic number, because the mean of its divisors is an integer number (265536).

2⁵³¹⁰⁷¹ is an apocalyptic number.

531071 is a deficient number, since it is larger than the sum of its proper divisors (1).

531071 is an equidigital number, since it uses as much as digits as its factorization.

531071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105, while the sum is 17.

The square root of 531071 is about 728.7461835235. The cubic root of 531071 is about 80.9811976883.

The spelling of 531071 in words is "five hundred thirty-one thousand, seventy-one".