631290884 has 96 divisors (see below), whose sum is σ = 1370880000. Its totient is φ = 248396544.

The previous prime is 631290883. The next prime is 631290901. The reversal of 631290884 is 488092136.

It is not an unprimeable number, because it can be changed into a prime (631290883) 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 31 ways as a sum of consecutive naturals, for example, 3172217 + ... + 3172415.

It is an arithmetic number, because the mean of its divisors is an integer number (14280000).

Almost surely, 2^631290884 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 631290884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685440000).

631290884 is an abundant number, since it is smaller than the sum of its proper divisors (739589116).

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

631290884 is a wasteful number, since it uses less digits than its factorization.

631290884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 631290884 is about 25125.5026616384. The cubic root of 631290884 is about 857.8470049938.

The spelling of 631290884 in words is "six hundred thirty-one million, two hundred ninety thousand, eight hundred eighty-four".