320336316881 has 16 divisors (see below), whose sum is σ = 371312310528. Its totient is φ = 270664934400.

The previous prime is 320336316863. The next prime is 320336316889. The reversal of 320336316881 is 188613633023.

It is a de Polignac number, because none of the positive numbers 2^k-320336316881 is a prime.

It is a super-2 number, since 2×320336316881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320336316889) 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, 3413321 + ... + 3505913.

It is an arithmetic number, because the mean of its divisors is an integer number (23207019408).

Almost surely, 2^320336316881 is an apocalyptic number.

It is an amenable number.

320336316881 is a deficient number, since it is larger than the sum of its proper divisors (50975993647).

320336316881 is an equidigital number, since it uses as much as digits as its factorization.

320336316881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99632.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 320336316881 in words is "three hundred twenty billion, three hundred thirty-six million, three hundred sixteen thousand, eight hundred eighty-one".