2531288 has 16 divisors (see below), whose sum is σ = 4952880. Its totient is φ = 1210528.

The previous prime is 2531267. The next prime is 2531293. The reversal of 2531288 is 8821352.

It is a self number, because there is not a number n which added to its sum of digits gives 2531288.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6695 + ... + 7062.

It is an arithmetic number, because the mean of its divisors is an integer number (309555).

2^2531288 is an apocalyptic number.

It is an amenable number.

2531288 is a deficient number, since it is larger than the sum of its proper divisors (2421592).

2531288 is a wasteful number, since it uses less digits than its factorization.

2531288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13786 (or 13782 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 2531288 is about 1591.0021998728. The cubic root of 2531288 is about 136.2847264401.

Subtracting 2531288 from its reverse (8821352), we obtain a square (6290064 = 2508²).

It can be divided in two parts, 25 and 31288, that added together give a palindrome (31313).

The spelling of 2531288 in words is "two million, five hundred thirty-one thousand, two hundred eighty-eight".