631875428 has 12 divisors (see below), whose sum is σ = 1108749180. Its totient is φ = 315089952.

The previous prime is 631875421. The next prime is 631875443. The reversal of 631875428 is 824578136.

631875428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 497825344 + 134050084 = 22312^2 + 11578^2 .

It is not an unprimeable number, because it can be changed into a prime (631875421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210263 + ... + 213246.

It is an arithmetic number, because the mean of its divisors is an integer number (92395765).

Almost surely, 2^631875428 is an apocalyptic number.

It is an amenable number.

631875428 is a deficient number, since it is larger than the sum of its proper divisors (476873752).

631875428 is a wasteful number, since it uses less digits than its factorization.

631875428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423886 (or 423884 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 631875428 is about 25137.1324538023. The cubic root of 631875428 is about 858.1116978845. Note that the first 3 decimals are identical.

The spelling of 631875428 in words is "six hundred thirty-one million, eight hundred seventy-five thousand, four hundred twenty-eight".