631573332 has 48 divisors (see below), whose sum is σ = 1595164032. Its totient is φ = 193334400.

The previous prime is 631573331. The next prime is 631573343. The reversal of 631573332 is 233375136.

It is a junction number, because it is equal to n+sod(n) for n = 631573293 and 631573302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631573331) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20457 + ... + 41007.

It is an arithmetic number, because the mean of its divisors is an integer number (33232584).

Almost surely, 2^631573332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631573332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (797582016).

631573332 is an abundant number, since it is smaller than the sum of its proper divisors (963590700).

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

631573332 is a wasteful number, since it uses less digits than its factorization.

631573332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20768 (or 20766 counting only the distinct ones).

The product of its digits is 34020, while the sum is 33.

The square root of 631573332 is about 25131.1227763504. The cubic root of 631573332 is about 857.9749233329.

The spelling of 631573332 in words is "six hundred thirty-one million, five hundred seventy-three thousand, three hundred thirty-two".