320516023 has 4 divisors (see below), whose sum is σ = 327969928. Its totient is φ = 313062120.

The previous prime is 320516003. The next prime is 320516029. The reversal of 320516023 is 320615023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320516023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320515985 and 320516003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320516029) 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, 3726888 + ... + 3726973.

It is an arithmetic number, because the mean of its divisors is an integer number (81992482).

Almost surely, 2^320516023 is an apocalyptic number.

320516023 is a deficient number, since it is larger than the sum of its proper divisors (7453905).

320516023 is an equidigital number, since it uses as much as digits as its factorization.

320516023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7453904.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 320516023 is about 17902.9612913618. The cubic root of 320516023 is about 684.3578424366.

The spelling of 320516023 in words is "three hundred twenty million, five hundred sixteen thousand, twenty-three".