531135012 has 48 divisors (see below), whose sum is σ = 1328866560. Its totient is φ = 164516352.

The previous prime is 531134993. The next prime is 531135019. The reversal of 531135012 is 210531135.

It is a self number, because there is not a number n which added to its sum of digits gives 531135012.

It is not an unprimeable number, because it can be changed into a prime (531135019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363 + ... + 32594.

It is an arithmetic number, because the mean of its divisors is an integer number (27684720).

Almost surely, 2^531135012 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 531135012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664433280).

531135012 is an abundant number, since it is smaller than the sum of its proper divisors (797731548).

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

531135012 is a wasteful number, since it uses less digits than its factorization.

531135012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33060 (or 33058 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 531135012 is about 23046.3665682901. The cubic root of 531135012 is about 809.8445121450.

Adding to 531135012 its reverse (210531135), we get a palindrome (741666147).

The spelling of 531135012 in words is "five hundred thirty-one million, one hundred thirty-five thousand, twelve".