631428886 has 16 divisors (see below), whose sum is σ = 1034090640. Its totient is φ = 286778880.

The previous prime is 631428877. The next prime is 631428907. The reversal of 631428886 is 688824136.

631428886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17470 + ... + 39598.

It is an arithmetic number, because the mean of its divisors is an integer number (64630665).

Almost surely, 2^631428886 is an apocalyptic number.

631428886 is a deficient number, since it is larger than the sum of its proper divisors (402661754).

631428886 is a wasteful number, since it uses less digits than its factorization.

631428886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23439.

The product of its digits is 442368, while the sum is 46.

The square root of 631428886 is about 25128.2487650851. The cubic root of 631428886 is about 857.9095097123.

The spelling of 631428886 in words is "six hundred thirty-one million, four hundred twenty-eight thousand, eight hundred eighty-six".