531881364 has 96 divisors (see below), whose sum is σ = 1533521920. Its totient is φ = 140061312.

The previous prime is 531881323. The next prime is 531881393. The reversal of 531881364 is 463188135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54549 + ... + 63555.

Almost surely, 2^531881364 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 531881364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766760960).

531881364 is an abundant number, since it is smaller than the sum of its proper divisors (1001640556).

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

531881364 is a wasteful number, since it uses less digits than its factorization.

531881364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9077 (or 9075 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 531881364 is about 23062.5532844913. The cubic root of 531881364 is about 810.2236663233.

The spelling of 531881364 in words is "five hundred thirty-one million, eight hundred eighty-one thousand, three hundred sixty-four".