631662847317 has 20 divisors (see below), whose sum is σ = 944214865440. Its totient is φ = 420831983304.

The previous prime is 631662847313. The next prime is 631662847331. The reversal of 631662847317 is 713748266136.

It is a happy number.

631662847317 is a `hidden beast` number, since 6 + 3 + 1 + 6 + 628 + 4 + 7 + 3 + 1 + 7 = 666.

It is not a de Polignac number, because 631662847317 - 2² = 631662847313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631662847313) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2436817 + ... + 2683542.

It is an arithmetic number, because the mean of its divisors is an integer number (47210743272).

Almost surely, 2^631662847317 is an apocalyptic number.

It is an amenable number.

631662847317 is a deficient number, since it is larger than the sum of its proper divisors (312552018123).

631662847317 is a wasteful number, since it uses less digits than its factorization.

631662847317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121894 (or 5121885 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 631662847317 in words is "six hundred thirty-one billion, six hundred sixty-two million, eight hundred forty-seven thousand, three hundred seventeen".