316753327721 has 4 divisors (see below), whose sum is σ = 316795676244. Its totient is φ = 316710979200.

The previous prime is 316753327703. The next prime is 316753327727. The reversal of 316753327721 is 127723357613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 127723357613 = 88607 ⋅1441459.

It can be written as a sum of positive squares in 2 ways, for example, as 271452462121 + 45300865600 = 521011^2 + 212840^2 .

It is a cyclic number.

It is not a de Polignac number, because 316753327721 - 2²⁶ = 316686218857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316753327727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21163040 + ... + 21178001.

It is an arithmetic number, because the mean of its divisors is an integer number (79198919061).

Almost surely, 2^316753327721 is an apocalyptic number.

It is an amenable number.

316753327721 is a deficient number, since it is larger than the sum of its proper divisors (42348523).

316753327721 is an equidigital number, since it uses as much as digits as its factorization.

316753327721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42348522.

The product of its digits is 1111320, while the sum is 47.

The spelling of 316753327721 in words is "three hundred sixteen billion, seven hundred fifty-three million, three hundred twenty-seven thousand, seven hundred twenty-one".