320111045011 has 4 divisors (see below), whose sum is σ = 320679626472. Its totient is φ = 319542463552.

The previous prime is 320111044993. The next prime is 320111045021. The reversal of 320111045011 is 110540111023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320111045011 - 2¹¹ = 320111042963 is a prime.

It is a super-2 number, since 2×320111045011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320111045011.

It is not an unprimeable number, because it can be changed into a prime (320111045021) 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 3 ways as a sum of consecutive naturals, for example, 284289886 + ... + 284291011.

It is an arithmetic number, because the mean of its divisors is an integer number (80169906618).

Almost surely, 2^320111045011 is an apocalyptic number.

320111045011 is a deficient number, since it is larger than the sum of its proper divisors (568581461).

320111045011 is an equidigital number, since it uses as much as digits as its factorization.

320111045011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568581460.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 320111045011 its reverse (110540111023), we get a palindrome (430651156034).

The spelling of 320111045011 in words is "three hundred twenty billion, one hundred eleven million, forty-five thousand, eleven".