2531531044 has 24 divisors (see below), whose sum is σ = 5329540160. Its totient is φ = 1027839456.

The previous prime is 2531531039. The next prime is 2531531077. The reversal of 2531531044 is 4401351352.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2378727 + ... + 2379790.

Almost surely, 2^2531531044 is an apocalyptic number.

It is an amenable number.

2531531044 is an abundant number, since it is smaller than the sum of its proper divisors (2798009116).

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

2531531044 is a wasteful number, since it uses less digits than its factorization.

2531531044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4758547 (or 4758545 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2531531044 is about 50314.3224539494. The cubic root of 2531531044 is about 1362.8908813590.

Adding to 2531531044 its reverse (4401351352), we get a palindrome (6932882396).

The spelling of 2531531044 in words is "two billion, five hundred thirty-one million, five hundred thirty-one thousand, forty-four".