531343 has 2 divisors, whose sum is σ = 531344. Its totient is φ = 531342.

The previous prime is 531337. The next prime is 531347. The reversal of 531343 is 343135.

531343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531343 is a prime.

It is equal to p₄₃₉₃₀ and since 531343 and 43930 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 531343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265671 + 265672.

It is an arithmetic number, because the mean of its divisors is an integer number (265672).

2⁵³¹³⁴³ is an apocalyptic number.

531343 is a deficient number, since it is larger than the sum of its proper divisors (1).

531343 is an equidigital number, since it uses as much as digits as its factorization.

531343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 19.

The square root of 531343 is about 728.9327815375. The cubic root of 531343 is about 80.9950207781.

Adding to 531343 its reverse (343135), we get a palindrome (874478).

It can be divided in two parts, 5313 and 43, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 531343 in words is "five hundred thirty-one thousand, three hundred forty-three".