317134160721 has 36 divisors (see below), whose sum is σ = 547273650612. Its totient is φ = 176321686464.

The previous prime is 317134160719. The next prime is 317134160731. The reversal of 317134160721 is 127061431713.

It is a happy number.

317134160721 is a `hidden beast` number, since 3 + 1 + 7 + 1 + 3 + 41 + 607 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 284963792400 + 32170368321 = 533820^2 + 179361^2 .

It is not a de Polignac number, because 317134160721 - 2¹ = 317134160719 is a prime.

It is a super-3 number, since 3×317134160721³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (317134160731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9701590 + ... + 9734223.

Almost surely, 2^317134160721 is an apocalyptic number.

It is an amenable number.

317134160721 is a deficient number, since it is larger than the sum of its proper divisors (230139489891).

317134160721 is a wasteful number, since it uses less digits than its factorization.

317134160721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19435870 (or 19435860 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 317134160721 in words is "three hundred seventeen billion, one hundred thirty-four million, one hundred sixty thousand, seven hundred twenty-one".