531143 has 2 divisors, whose sum is σ = 531144. Its totient is φ = 531142.

The previous prime is 531133. The next prime is 531163. The reversal of 531143 is 341135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531143 - 2⁶ = 531079 is a prime.

It is a super-2 number, since 2×531143² = 564225772898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265571 + 265572.

It is an arithmetic number, because the mean of its divisors is an integer number (265572).

2⁵³¹¹⁴³ is an apocalyptic number.

531143 is a deficient number, since it is larger than the sum of its proper divisors (1).

531143 is an equidigital number, since it uses as much as digits as its factorization.

531143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 17.

The square root of 531143 is about 728.7955817649. The cubic root of 531143 is about 80.9848572008.

Adding to 531143 its reverse (341135), we get a palindrome (872278).

The spelling of 531143 in words is "five hundred thirty-one thousand, one hundred forty-three".