316355017221 has 12 divisors (see below), whose sum is σ = 457353582348. Its totient is φ = 210720420864.

The previous prime is 316355017219. The next prime is 316355017261. The reversal of 316355017221 is 122710553613.

316355017221 is a `hidden beast` number, since 3 + 1 + 63 + 5 + 501 + 72 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 154236852900 + 162118164321 = 392730^2 + 402639^2 .

It is not a de Polignac number, because 316355017221 - 2¹ = 316355017219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316355017261) 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, 15232710 + ... + 15253463.

It is an arithmetic number, because the mean of its divisors is an integer number (38112798529).

Almost surely, 2^316355017221 is an apocalyptic number.

It is an amenable number.

316355017221 is a deficient number, since it is larger than the sum of its proper divisors (140998565127).

316355017221 is a wasteful number, since it uses less digits than its factorization.

316355017221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30487332 (or 30487329 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 316355017221 in words is "three hundred sixteen billion, three hundred fifty-five million, seventeen thousand, two hundred twenty-one".