320011112321 has 4 divisors (see below), whose sum is σ = 327816261444. Its totient is φ = 312205963200.

The previous prime is 320011112293. The next prime is 320011112327. The reversal of 320011112321 is 123211110023.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18505793296 + 301505319025 = 136036^2 + 549095^2 .

It is a cyclic number.

It is not a de Polignac number, because 320011112321 - 2¹⁰ = 320011111297 is a prime.

It is a super-2 number, since 2×320011112321² (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 320011112321.

It is not an unprimeable number, because it can be changed into a prime (320011112327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3902574500 + ... + 3902574581.

It is an arithmetic number, because the mean of its divisors is an integer number (81954065361).

Almost surely, 2^320011112321 is an apocalyptic number.

It is an amenable number.

320011112321 is a deficient number, since it is larger than the sum of its proper divisors (7805149123).

320011112321 is an equidigital number, since it uses as much as digits as its factorization.

320011112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805149122.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 320011112321 its reverse (123211110023), we get a palindrome (443222222344).

The spelling of 320011112321 in words is "three hundred twenty billion, eleven million, one hundred twelve thousand, three hundred twenty-one".