231316 has 6 divisors (see below), whose sum is σ = 404810. Its totient is φ = 115656.

The previous prime is 231299. The next prime is 231317. The reversal of 231316 is 613132.

231316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 198916 + 32400 = 446^2 + 180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231317) by changing a digit.

231316 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, 28911 + ... + 28918.

2²³¹³¹⁶ is an apocalyptic number.

It is an amenable number.

231316 is a deficient number, since it is larger than the sum of its proper divisors (173494).

231316 is a wasteful number, since it uses less digits than its factorization.

231316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57833 (or 57831 counting only the distinct ones).

The product of its digits is 108, while the sum is 16.

The square root of 231316 is about 480.9532201784. The cubic root of 231316 is about 61.3858901536.

Adding to 231316 its reverse (613132), we get a palindrome (844448).

The spelling of 231316 in words is "two hundred thirty-one thousand, three hundred sixteen".