320311023 has 4 divisors (see below), whose sum is σ = 427081368. Its totient is φ = 213540680.

The previous prime is 320311021. The next prime is 320311031. The reversal of 320311023 is 320113023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320113023 = 3 ⋅106704341.

It is a cyclic number.

It is not a de Polignac number, because 320311023 - 2¹ = 320311021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320310993 and 320311011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320311021) 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, 53385168 + ... + 53385173.

It is an arithmetic number, because the mean of its divisors is an integer number (106770342).

Almost surely, 2^320311023 is an apocalyptic number.

320311023 is a deficient number, since it is larger than the sum of its proper divisors (106770345).

320311023 is a wasteful number, since it uses less digits than its factorization.

320311023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106770344.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 320311023 is about 17897.2350657860. The cubic root of 320311023 is about 684.2119076851.

Adding to 320311023 its reverse (320113023), we get a palindrome (640424046).

The spelling of 320311023 in words is "three hundred twenty million, three hundred eleven thousand, twenty-three".