531012 has 48 divisors (see below), whose sum is σ = 1391040. Its totient is φ = 156672.

The previous prime is 530989. The next prime is 531017. The reversal of 531012 is 210135.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (531017) by changing a digit.

531012 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, 3808 + ... + 3944.

It is an arithmetic number, because the mean of its divisors is an integer number (28980).

2⁵³¹⁰¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695520).

531012 is an abundant number, since it is smaller than the sum of its proper divisors (860028).

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

531012 is a wasteful number, since it uses less digits than its factorization.

531012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 531012 is about 728.7057019126. The cubic root of 531012 is about 80.9781986746.

Adding to 531012 its reverse (210135), we get a palindrome (741147).

The spelling of 531012 in words is "five hundred thirty-one thousand, twelve".