231738 has 16 divisors (see below), whose sum is σ = 499296. Its totient is φ = 71280.

The previous prime is 231719. The next prime is 231779. The reversal of 231738 is 837132.

231738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1408 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (31206).

2²³¹⁷³⁸ is an apocalyptic number.

231738 is an abundant number, since it is smaller than the sum of its proper divisors (267558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231738 is a wasteful number, since it uses less digits than its factorization.

231738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989.

The product of its digits is 1008, while the sum is 24.

The square root of 231738 is about 481.3917323760. The cubic root of 231738 is about 61.4231971399.

It can be divided in two parts, 231 and 738, that added together give a palindrome (969).

The spelling of 231738 in words is "two hundred thirty-one thousand, seven hundred thirty-eight".