320023101331 has 4 divisors (see below), whose sum is σ = 320066255992. Its totient is φ = 319979946672.

The previous prime is 320023101323. The next prime is 320023101347. The reversal of 320023101331 is 133101320023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133101320023 = 7 ⋅19014474289.

It is a cyclic number.

It is not a de Polignac number, because 320023101331 - 2³ = 320023101323 is a prime.

It is a super-2 number, since 2×320023101331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320023101299 and 320023101308.

It is not an unprimeable number, because it can be changed into a prime (320023101361) 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, 21566205 + ... + 21581038.

It is an arithmetic number, because the mean of its divisors is an integer number (80016563998).

Almost surely, 2^320023101331 is an apocalyptic number.

320023101331 is a deficient number, since it is larger than the sum of its proper divisors (43154661).

320023101331 is an equidigital number, since it uses as much as digits as its factorization.

320023101331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43154660.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 320023101331 its reverse (133101320023), we get a palindrome (453124421354).

The spelling of 320023101331 in words is "three hundred twenty billion, twenty-three million, one hundred one thousand, three hundred thirty-one".