320323221131 has 4 divisors (see below), whose sum is σ = 328135982664. Its totient is φ = 312510459600.

The previous prime is 320323221121. The next prime is 320323221139. The reversal of 320323221131 is 131122323023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131122323023 = 75169 ⋅1744367.

It is a cyclic number.

It is not a de Polignac number, because 320323221131 - 2⁶ = 320323221067 is a prime.

It is a super-3 number, since 3×320323221131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320323221097 and 320323221106.

It is not an unprimeable number, because it can be changed into a prime (320323221139) 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, 3906380705 + ... + 3906380786.

It is an arithmetic number, because the mean of its divisors is an integer number (82033995666).

Almost surely, 2^320323221131 is an apocalyptic number.

320323221131 is a deficient number, since it is larger than the sum of its proper divisors (7812761533).

320323221131 is an equidigital number, since it uses as much as digits as its factorization.

320323221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7812761532.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 320323221131 its reverse (131122323023), we get a palindrome (451445544154).

The spelling of 320323221131 in words is "three hundred twenty billion, three hundred twenty-three million, two hundred twenty-one thousand, one hundred thirty-one".