2531124644 has 12 divisors (see below), whose sum is σ = 4436255964. Its totient is φ = 1263622944.

The previous prime is 2531124637. The next prime is 2531124689. The reversal of 2531124644 is 4464211352.

It can be written as a sum of positive squares in 2 ways, for example, as 774508900 + 1756615744 = 27830^2 + 41912^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2531124644.

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, 481907 + ... + 487130.

It is an arithmetic number, because the mean of its divisors is an integer number (369687997).

Almost surely, 2^2531124644 is an apocalyptic number.

It is an amenable number.

2531124644 is a deficient number, since it is larger than the sum of its proper divisors (1905131320).

2531124644 is a wasteful number, since it uses less digits than its factorization.

2531124644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969694 (or 969692 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 2531124644 is about 50310.2836803769. The cubic root of 2531124644 is about 1362.8179467743.

Adding to 2531124644 its reverse (4464211352), we get a palindrome (6995335996).

The spelling of 2531124644 in words is "two billion, five hundred thirty-one million, one hundred twenty-four thousand, six hundred forty-four".