316127860821 has 12 divisors (see below), whose sum is σ = 457853343948. Its totient is φ = 210186886464.

The previous prime is 316127860819. The next prime is 316127860879. The reversal of 316127860821 is 128068721613.

316127860821 is a `hidden beast` number, since 3 + 1 + 6 + 12 + 7 + 8 + 608 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 244469924721 + 71657936100 = 494439^2 + 267690^2 .

It is not a de Polignac number, because 316127860821 - 2¹ = 316127860819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316120860821) 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 11 ways as a sum of consecutive naturals, for example, 47081520 + ... + 47088233.

It is an arithmetic number, because the mean of its divisors is an integer number (38154445329).

Almost surely, 2^316127860821 is an apocalyptic number.

It is an amenable number.

316127860821 is a deficient number, since it is larger than the sum of its proper divisors (141725483127).

316127860821 is a wasteful number, since it uses less digits than its factorization.

316127860821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94170132 (or 94170129 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 316127860821 in words is "three hundred sixteen billion, one hundred twenty-seven million, eight hundred sixty thousand, eight hundred twenty-one".