2531281044 has 12 divisors (see below), whose sum is σ = 5906322464. Its totient is φ = 843760344.

The previous prime is 2531281009. The next prime is 2531281091. The reversal of 2531281044 is 4401821352.

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

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, 105470032 + ... + 105470055.

Almost surely, 2^2531281044 is an apocalyptic number.

It is an amenable number.

2531281044 is an abundant number, since it is smaller than the sum of its proper divisors (3375041420).

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

2531281044 is a wasteful number, since it uses less digits than its factorization.

2531281044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210940094 (or 210940092 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 2531281044 is about 50311.8380105518. The cubic root of 2531281044 is about 1362.8460160277.

The spelling of 2531281044 in words is "two billion, five hundred thirty-one million, two hundred eighty-one thousand, forty-four".