531943 has 4 divisors (see below), whose sum is σ = 559960. Its totient is φ = 503928.

The previous prime is 531919. The next prime is 531977. The reversal of 531943 is 349135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349135 = 5 ⋅69827.

It is a cyclic number.

It is not a de Polignac number, because 531943 - 2⁵ = 531911 is a prime.

It is a Duffinian number.

531943 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531983) 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 in 3 ways as a sum of consecutive naturals, for example, 13980 + ... + 14017.

It is an arithmetic number, because the mean of its divisors is an integer number (139990).

2⁵³¹⁹⁴³ is an apocalyptic number.

531943 is a deficient number, since it is larger than the sum of its proper divisors (28017).

531943 is a wasteful number, since it uses less digits than its factorization.

531943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28016.

The product of its digits is 1620, while the sum is 25.

The square root of 531943 is about 729.3442260003. The cubic root of 531943 is about 81.0254962160.

The spelling of 531943 in words is "five hundred thirty-one thousand, nine hundred forty-three".