531031044 has 12 divisors (see below), whose sum is σ = 1239072464. Its totient is φ = 177010344.

The previous prime is 531031001. The next prime is 531031063. The reversal of 531031044 is 440130135.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 531031044.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22126282 + ... + 22126305.

Almost surely, 2^531031044 is an apocalyptic number.

It is an amenable number.

531031044 is an abundant number, since it is smaller than the sum of its proper divisors (708041420).

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

531031044 is a wasteful number, since it uses less digits than its factorization.

531031044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44252594 (or 44252592 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 531031044 is about 23044.1108311863. The cubic root of 531031044 is about 809.7916671955.

Adding to 531031044 its reverse (440130135), we get a palindrome (971161179).

Subtracting from 531031044 its reverse (440130135), we obtain a palindrome (90900909).

The spelling of 531031044 in words is "five hundred thirty-one million, thirty-one thousand, forty-four".