531308 has 12 divisors (see below), whose sum is σ = 951720. Its totient is φ = 259392.

The previous prime is 531299. The next prime is 531331. The reversal of 531308 is 803135.

It is a plaindrome in base 13.

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 531308.

It is an unprimeable number.

531308 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373 + ... + 1716.

It is an arithmetic number, because the mean of its divisors is an integer number (79310).

2⁵³¹³⁰⁸ is an apocalyptic number.

It is an amenable number.

531308 is a deficient number, since it is larger than the sum of its proper divisors (420412).

531308 is a wasteful number, since it uses less digits than its factorization.

531308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136 (or 3134 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 531308 is about 728.9087734415. The cubic root of 531308 is about 80.9932423362.

It can be divided in two parts, 5 and 31308, that added together give a palindrome (31313).

The spelling of 531308 in words is "five hundred thirty-one thousand, three hundred eight".