531730 has 8 divisors (see below), whose sum is σ = 957132. Its totient is φ = 212688.

The previous prime is 531701. The next prime is 531731. The reversal of 531730 is 37135.

It can be written as a sum of positive squares in 2 ways, for example, as 531441 + 289 = 729^2 + 17^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 531698 and 531707.

It is not an unprimeable number, because it can be changed into a prime (531731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26577 + ... + 26596.

2⁵³¹⁷³⁰ is an apocalyptic number.

531730 is a deficient number, since it is larger than the sum of its proper divisors (425402).

531730 is a wasteful number, since it uses less digits than its factorization.

531730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53180.

The product of its (nonzero) digits is 315, while the sum is 19.

The square root of 531730 is about 729.1981897948. The cubic root of 531730 is about 81.0146800604.

Adding to 531730 its reverse (37135), we get a palindrome (568865).

The spelling of 531730 in words is "five hundred thirty-one thousand, seven hundred thirty".