266231 has 8 divisors (see below), whose sum is σ = 309024. Its totient is φ = 224640.

The previous prime is 266221. The next prime is 266239. The reversal of 266231 is 132662.

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

It is a cyclic number.

It is not a de Polignac number, because 266231 - 2¹⁰ = 265207 is a prime.

It is a super-2 number, since 2×266231² = 141757890722, 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 (266239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251 + ... + 771.

It is an arithmetic number, because the mean of its divisors is an integer number (38628).

2²⁶⁶²³¹ is an apocalyptic number.

266231 is a deficient number, since it is larger than the sum of its proper divisors (42793).

266231 is an equidigital number, since it uses as much as digits as its factorization.

266231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601.

The product of its digits is 432, while the sum is 20.

The square root of 266231 is about 515.9757746251. The cubic root of 266231 is about 64.3308872388.

Adding to 266231 its reverse (132662), we get a palindrome (398893).

The spelling of 266231 in words is "two hundred sixty-six thousand, two hundred thirty-one".