631127902817 has 16 divisors (see below), whose sum is σ = 692565573120. Its totient is φ = 572894208000.

The previous prime is 631127902793. The next prime is 631127902829. The reversal of 631127902817 is 718209721136.

It is a cyclic number.

It is not a de Polignac number, because 631127902817 - 2¹⁸ = 631127640673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631127902877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5245088 + ... + 5364065.

It is an arithmetic number, because the mean of its divisors is an integer number (43285348320).

Almost surely, 2^631127902817 is an apocalyptic number.

It is an amenable number.

631127902817 is a deficient number, since it is larger than the sum of its proper divisors (61437670303).

631127902817 is a wasteful number, since it uses less digits than its factorization.

631127902817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10609304.

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 631127902817 in words is "six hundred thirty-one billion, one hundred twenty-seven million, nine hundred two thousand, eight hundred seventeen".