231838 has 8 divisors (see below), whose sum is σ = 366120. Its totient is φ = 109800.

The previous prime is 231827. The next prime is 231839. The reversal of 231838 is 838132.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3013 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (45765).

2²³¹⁸³⁸ is an apocalyptic number.

231838 is a deficient number, since it is larger than the sum of its proper divisors (134282).

231838 is a wasteful number, since it uses less digits than its factorization.

231838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6122.

The product of its digits is 1152, while the sum is 25.

The square root of 231838 is about 481.4955866880. The cubic root of 231838 is about 61.4320310189.

The spelling of 231838 in words is "two hundred thirty-one thousand, eight hundred thirty-eight".