2531042644 has 12 divisors (see below), whose sum is σ = 4770042004. Its totient is φ = 1168173504.

The previous prime is 2531042629. The next prime is 2531042663. The reversal of 2531042644 is 4462401352.

2531042644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1500632644 + 1030410000 = 38738^2 + 32100^2 .

It is a congruent number.

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, 24336897 + ... + 24337000.

Almost surely, 2^2531042644 is an apocalyptic number.

It is an amenable number.

2531042644 is a deficient number, since it is larger than the sum of its proper divisors (2238999360).

2531042644 is a wasteful number, since it uses less digits than its factorization.

2531042644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48673914 (or 48673912 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 2531042644 is about 50309.4687310451. The cubic root of 2531042644 is about 1362.8032296960.

Adding to 2531042644 its reverse (4462401352), we get a palindrome (6993443996).

The spelling of 2531042644 in words is "two billion, five hundred thirty-one million, forty-two thousand, six hundred forty-four".