531838 has 8 divisors (see below), whose sum is σ = 819432. Its totient is φ = 258696.

The previous prime is 531833. The next prime is 531841. The reversal of 531838 is 838135.

531838 = T₃₇ + T₃₈ + ... + T₁₄₇.

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

It is a d-powerful number, because it can be written as 5² + 3⁵ + 8² + 1 + 3¹² + 8² .

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531833) by changing a digit.

531838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 3520 + ... + 3667.

It is an arithmetic number, because the mean of its divisors is an integer number (102429).

2⁵³¹⁸³⁸ is an apocalyptic number.

531838 is a deficient number, since it is larger than the sum of its proper divisors (287594).

531838 is a wasteful number, since it uses less digits than its factorization.

531838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7226.

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

The square root of 531838 is about 729.2722399763. The cubic root of 531838 is about 81.0201646692.

It can be divided in two parts, 5318 and 38, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 531838 in words is "five hundred thirty-one thousand, eight hundred thirty-eight".