231326 has 4 divisors (see below), whose sum is σ = 346992. Its totient is φ = 115662.

The previous prime is 231323. The next prime is 231331. The reversal of 231326 is 623132.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57830 + ... + 57833.

It is an arithmetic number, because the mean of its divisors is an integer number (86748).

2²³¹³²⁶ is an apocalyptic number.

231326 is a deficient number, since it is larger than the sum of its proper divisors (115666).

231326 is a wasteful number, since it uses less digits than its factorization.

231326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115665.

The product of its digits is 216, while the sum is 17.

The square root of 231326 is about 480.9636160875. The cubic root of 231326 is about 61.3867747301.

Adding to 231326 its reverse (623132), we get a palindrome (854458).

The spelling of 231326 in words is "two hundred thirty-one thousand, three hundred twenty-six".