631232 has 28 divisors (see below), whose sum is σ = 1432560. Its totient is φ = 270336.

The previous prime is 631229. The next prime is 631247. The reversal of 631232 is 232136.

It is a tau number, because it is divible by the number of its divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 631232.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257 + ... + 1152.

2⁶³¹²³² is an apocalyptic number.

It is an amenable number.

631232 is an abundant number, since it is smaller than the sum of its proper divisors (801328).

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

631232 is a wasteful number, since it uses less digits than its factorization.

631232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1418 counting only the distinct ones).

The product of its digits is 216, while the sum is 17.

The square root of 631232 is about 794.5011013208. The cubic root of 631232 is about 85.7820332116.

Adding to 631232 its reverse (232136), we get a palindrome (863368).

The spelling of 631232 in words is "six hundred thirty-one thousand, two hundred thirty-two".