531039 has 4 divisors (see below), whose sum is σ = 708056. Its totient is φ = 354024.

The previous prime is 531023. The next prime is 531043. The reversal of 531039 is 930135.

531039 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.

It is not a de Polignac number, because 531039 - 2⁴ = 531023 is a prime.

It is a D-number.

It is a Duffinian number.

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 (531079) 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, 88504 + ... + 88509.

It is an arithmetic number, because the mean of its divisors is an integer number (177014).

2⁵³¹⁰³⁹ is an apocalyptic number.

531039 is a deficient number, since it is larger than the sum of its proper divisors (177017).

531039 is a wasteful number, since it uses less digits than its factorization.

531039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177016.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 531039 is about 728.7242276746. The cubic root of 531039 is about 80.9795711322.

The spelling of 531039 in words is "five hundred thirty-one thousand, thirty-nine".