631081792 has 84 divisors (see below), whose sum is σ = 1386413280. Its totient is φ = 284796160.

The previous prime is 631081741. The next prime is 631081813. The reversal of 631081792 is 297180136.

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 11 ways as a sum of consecutive naturals, for example, 1757709 + ... + 1758067.

It is an arithmetic number, because the mean of its divisors is an integer number (16504920).

Almost surely, 2^631081792 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 631081792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693206640).

631081792 is an abundant number, since it is smaller than the sum of its proper divisors (755331488).

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

631081792 is a wasteful number, since it uses less digits than its factorization.

631081792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 631081792 is about 25121.3413654606. The cubic root of 631081792 is about 857.7522843944.

The spelling of 631081792 in words is "six hundred thirty-one million, eighty-one thousand, seven hundred ninety-two".