2531232 has 144 divisors (see below), whose sum is σ = 8491392. Its totient is φ = 706560.

The previous prime is 2531209. The next prime is 2531233. The reversal of 2531232 is 2321352.

2531232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2531233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53833 + ... + 53879.

It is an arithmetic number, because the mean of its divisors is an integer number (58968).

2^2531232 is an apocalyptic number.

2531232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2531232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4245696).

2531232 is an abundant number, since it is smaller than the sum of its proper divisors (5960160).

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

2531232 is a wasteful number, since it uses less digits than its factorization.

2531232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 80 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 2531232 is about 1590.9846008054. The cubic root of 2531232 is about 136.2837214180.

Adding to 2531232 its reverse (2321352), we get a palindrome (4852584).

It can be divided in two parts, 253 and 1232, that added together give a triangular number (1485 = T₅₄).

The spelling of 2531232 in words is "two million, five hundred thirty-one thousand, two hundred thirty-two".