538831 has 4 divisors (see below), whose sum is σ = 553432. Its totient is φ = 524232.

The previous prime is 538829. The next prime is 538841. The reversal of 538831 is 138835.

538831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138835 = 5 ⋅27767.

It is a cyclic number.

It is not a de Polignac number, because 538831 - 2¹ = 538829 is a prime.

It is a super-2 number, since 2×538831² = 580677693122, 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 538831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538801) 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, 7245 + ... + 7318.

It is an arithmetic number, because the mean of its divisors is an integer number (138358).

2⁵³⁸⁸³¹ is an apocalyptic number.

538831 is a deficient number, since it is larger than the sum of its proper divisors (14601).

538831 is a wasteful number, since it uses less digits than its factorization.

538831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14600.

The product of its digits is 2880, while the sum is 28.

The square root of 538831 is about 734.0510881403. The cubic root of 538831 is about 81.3737239290.

It can be divided in two parts, 538 and 831, that added together give a square (1369 = 37²).

The spelling of 538831 in words is "five hundred thirty-eight thousand, eight hundred thirty-one".