631631695848 has 64 divisors (see below), whose sum is σ = 1604291952960. Its totient is φ = 207188653056.

The previous prime is 631631695843. The next prime is 631631695861. The reversal of 631631695848 is 848596136136.

It is a junction number, because it is equal to n+sod(n) for n = 631631695791 and 631631695800.

It is not an unprimeable number, because it can be changed into a prime (631631695843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1369990 + ... + 1772042.

It is an arithmetic number, because the mean of its divisors is an integer number (25067061765).

Almost surely, 2^631631695848 is an apocalyptic number.

It is an amenable number.

631631695848 is an abundant number, since it is smaller than the sum of its proper divisors (972660257112).

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

631631695848 is a wasteful number, since it uses less digits than its factorization.

631631695848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403106 (or 403102 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 60.

The spelling of 631631695848 in words is "six hundred thirty-one billion, six hundred thirty-one million, six hundred ninety-five thousand, eight hundred forty-eight".