531304 has 8 divisors (see below), whose sum is σ = 996210. Its totient is φ = 265648.

The previous prime is 531299. The next prime is 531331. The reversal of 531304 is 403135.

It can be written as a sum of positive squares in only one way, i.e., 487204 + 44100 = 698^2 + 210^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 15.

It is an unprimeable number.

531304 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 as a sum of consecutive naturals, namely, 33199 + ... + 33214.

2⁵³¹³⁰⁴ is an apocalyptic number.

It is an amenable number.

531304 is a deficient number, since it is larger than the sum of its proper divisors (464906).

531304 is a wasteful number, since it uses less digits than its factorization.

531304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66419 (or 66415 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 531304 is about 728.9060296088. The cubic root of 531304 is about 80.9930390807.

Adding to 531304 its reverse (403135), we get a palindrome (934439).

It can be divided in two parts, 5 and 31304, that multiplied together give a triangular number (156520 = T₅₅₉).

The spelling of 531304 in words is "five hundred thirty-one thousand, three hundred four".