531030 has 32 divisors (see below), whose sum is σ = 1317888. Its totient is φ = 136800.

The previous prime is 531023. The next prime is 531043. The reversal of 531030 is 30135.

It is a happy number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 530997 and 531015.

It is a congruent number.

It is an unprimeable number.

531030 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645 + ... + 1215.

It is an arithmetic number, because the mean of its divisors is an integer number (41184).

2⁵³¹⁰³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658944).

531030 is an abundant number, since it is smaller than the sum of its proper divisors (786858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531030 is a wasteful number, since it uses less digits than its factorization.

531030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 531030 is about 728.7180524730. The cubic root of 531030 is about 80.9791136515.

Adding to 531030 its reverse (30135), we get a palindrome (561165).

The spelling of 531030 in words is "five hundred thirty-one thousand, thirty".