631231452 has 36 divisors (see below), whose sum is σ = 1679594280. Its totient is φ = 199336032.

The previous prime is 631231439. The next prime is 631231453. The reversal of 631231452 is 254132136.

631231452 is a `hidden beast` number, since 631 + 23 + 1 + 4 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631231453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 460743 + ... + 462110.

Almost surely, 2^631231452 is an apocalyptic number.

It is an amenable number.

631231452 is an abundant number, since it is smaller than the sum of its proper divisors (1048362828).

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

631231452 is a wasteful number, since it uses less digits than its factorization.

631231452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922882 (or 922877 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 631231452 is about 25124.3199310947. The cubic root of 631231452 is about 857.8200838789.

Adding to 631231452 its reverse (254132136), we get a palindrome (885363588).

The spelling of 631231452 in words is "six hundred thirty-one million, two hundred thirty-one thousand, four hundred fifty-two".