631912844441 has 8 divisors (see below), whose sum is σ = 647729745768. Its totient is φ = 616115200000.

The previous prime is 631912844429. The next prime is 631912844443. The reversal of 631912844441 is 144448219136.

It can be written as a sum of positive squares in 4 ways, for example, as 159388585225 + 472524259216 = 399235^2 + 687404^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 631912844441 - 2¹⁰ = 631912843417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631912844443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4747760 + ... + 4879041.

It is an arithmetic number, because the mean of its divisors is an integer number (80966218221).

Almost surely, 2^631912844441 is an apocalyptic number.

It is an amenable number.

631912844441 is a deficient number, since it is larger than the sum of its proper divisors (15816901327).

631912844441 is a wasteful number, since it uses less digits than its factorization.

631912844441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9628443.

The product of its digits is 663552, while the sum is 47.

The spelling of 631912844441 in words is "six hundred thirty-one billion, nine hundred twelve million, eight hundred forty-four thousand, four hundred forty-one".