231236 has 6 divisors (see below), whose sum is σ = 404670. Its totient is φ = 115616.

The previous prime is 231223. The next prime is 231241. The reversal of 231236 is 632132.

It can be written as a sum of positive squares in only one way, i.e., 193600 + 37636 = 440^2 + 194^2 .

It is an unprimeable number.

231236 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, 28901 + ... + 28908.

It is an arithmetic number, because the mean of its divisors is an integer number (67445).

2²³¹²³⁶ is an apocalyptic number.

It is an amenable number.

231236 is a deficient number, since it is larger than the sum of its proper divisors (173434).

231236 is a wasteful number, since it uses less digits than its factorization.

231236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57813 (or 57811 counting only the distinct ones).

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

The square root of 231236 is about 480.8700448146. The cubic root of 231236 is about 61.3788126241.

Adding to 231236 its reverse (632132), we get a palindrome (863368).

The spelling of 231236 in words is "two hundred thirty-one thousand, two hundred thirty-six".