838531 has 8 divisors (see below), whose sum is σ = 872784. Its totient is φ = 804960.

The previous prime is 838517. The next prime is 838547. The reversal of 838531 is 135838.

838531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 838531 - 2⁷ = 838403 is a prime.

It is a super-2 number, since 2×838531² = 1406268475922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 838531.

It is not an unprimeable number, because it can be changed into a prime (838561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4761 + ... + 4933.

It is an arithmetic number, because the mean of its divisors is an integer number (109098).

2⁸³⁸⁵³¹ is an apocalyptic number.

838531 is a deficient number, since it is larger than the sum of its proper divisors (34253).

838531 is a wasteful number, since it uses less digits than its factorization.

838531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

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

The square root of 838531 is about 915.7133831063. The cubic root of 838531 is about 94.2988451912.

It can be divided in two parts, 838 and 531, that added together give a square (1369 = 37²).

The spelling of 838531 in words is "eight hundred thirty-eight thousand, five hundred thirty-one".