631876403385 has 16 divisors (see below), whose sum is σ = 1123335828480. Its totient is φ = 337000748400.

The previous prime is 631876403359. The next prime is 631876403407. The reversal of 631876403385 is 583304678136.

It is not a de Polignac number, because 631876403385 - 2¹¹ = 631876401337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2340282841 + ... + 2340283110.

It is an arithmetic number, because the mean of its divisors is an integer number (70208489280).

Almost surely, 2^631876403385 is an apocalyptic number.

It is an amenable number.

631876403385 is a deficient number, since it is larger than the sum of its proper divisors (491459425095).

631876403385 is a wasteful number, since it uses less digits than its factorization.

631876403385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680565965 (or 4680565959 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 631876403385 in words is "six hundred thirty-one billion, eight hundred seventy-six million, four hundred three thousand, three hundred eighty-five".