631291438107 has 24 divisors (see below), whose sum is σ = 995992012080. Its totient is φ = 382127892480.

The previous prime is 631291438079. The next prime is 631291438121. The reversal of 631291438107 is 701834192136.

631291438107 is a `hidden beast` number, since 631 + 2 + 9 + 1 + 4 + 3 + 8 + 1 + 0 + 7 = 666.

It is not a de Polignac number, because 631291438107 - 2¹⁶ = 631291372571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631291438147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3860998 + ... + 4021179.

It is an arithmetic number, because the mean of its divisors is an integer number (41499667170).

Almost surely, 2^631291438107 is an apocalyptic number.

631291438107 is a deficient number, since it is larger than the sum of its proper divisors (364700573973).

631291438107 is a wasteful number, since it uses less digits than its factorization.

631291438107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7883003 (or 7883000 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

It can be divided in two parts, 6312 and 91438107, that added together give a palindrome (91444419).

The spelling of 631291438107 in words is "six hundred thirty-one billion, two hundred ninety-one million, four hundred thirty-eight thousand, one hundred seven".