523231 has 4 divisors (see below), whose sum is σ = 529200. Its totient is φ = 517264.

The previous prime is 523219. The next prime is 523261. The reversal of 523231 is 132325.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523231 - 2⁹ = 522719 is a prime.

It is a super-2 number, since 2×523231² = 547541358722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2851 + ... + 3028.

It is an arithmetic number, because the mean of its divisors is an integer number (132300).

2⁵²³²³¹ is an apocalyptic number.

523231 is a deficient number, since it is larger than the sum of its proper divisors (5969).

523231 is an equidigital number, since it uses as much as digits as its factorization.

523231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968.

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

The square root of 523231 is about 723.3470812826. The cubic root of 523231 is about 80.5807222376.

Adding to 523231 its reverse (132325), we get a palindrome (655556).

The spelling of 523231 in words is "five hundred twenty-three thousand, two hundred thirty-one".