238311 has 6 divisors (see below), whose sum is σ = 344240. Its totient is φ = 158868.

The previous prime is 238307. The next prime is 238313. The reversal of 238311 is 113832.

It is not a de Polignac number, because 238311 - 2² = 238307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 238311.

It is not an unprimeable number, because it can be changed into a prime (238313) 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 in 5 ways as a sum of consecutive naturals, for example, 13231 + ... + 13248.

238311 is a Friedman number, since it can be written as 8*(31^3-2)-1, using all its digits and the basic arithmetic operations.

2²³⁸³¹¹ is an apocalyptic number.

238311 is a deficient number, since it is larger than the sum of its proper divisors (105929).

238311 is a wasteful number, since it uses less digits than its factorization.

238311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26485 (or 26482 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 238311 is about 488.1710765705. The cubic root of 238311 is about 61.9985258061.

It can be divided in two parts, 23831 and 1, that added together give a palindrome (23832).

The spelling of 238311 in words is "two hundred thirty-eight thousand, three hundred eleven".