238811 has 4 divisors (see below), whose sum is σ = 251400. Its totient is φ = 226224.

The previous prime is 238801. The next prime is 238829. The reversal of 238811 is 118832.

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

It is a cyclic number.

It is not a de Polignac number, because 238811 - 2⁶ = 238747 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 238811.

It is not an unprimeable number, because it can be changed into a prime (238801) 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 3 ways as a sum of consecutive naturals, for example, 6266 + ... + 6303.

It is an arithmetic number, because the mean of its divisors is an integer number (62850).

2²³⁸⁸¹¹ is an apocalyptic number.

238811 is a deficient number, since it is larger than the sum of its proper divisors (12589).

238811 is a wasteful number, since it uses less digits than its factorization.

238811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12588.

The product of its digits is 384, while the sum is 23.

The square root of 238811 is about 488.6829237860. The cubic root of 238811 is about 62.0418551926.

The spelling of 238811 in words is "two hundred thirty-eight thousand, eight hundred eleven".