338831 has 4 divisors (see below), whose sum is σ = 343200. Its totient is φ = 334464.

The previous prime is 338803. The next prime is 338839. The reversal of 338831 is 138833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138833 = 19 ⋅7307.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338831 is a prime.

It is a super-2 number, since 2×338831² = 229612893122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 338831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338839) 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, 2066 + ... + 2223.

It is an arithmetic number, because the mean of its divisors is an integer number (85800).

2³³⁸⁸³¹ is an apocalyptic number.

338831 is a deficient number, since it is larger than the sum of its proper divisors (4369).

338831 is an equidigital number, since it uses as much as digits as its factorization.

338831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368.

The product of its digits is 1728, while the sum is 26.

The square root of 338831 is about 582.0919171402. The cubic root of 338831 is about 69.7152377063.

The spelling of 338831 in words is "three hundred thirty-eight thousand, eight hundred thirty-one".