320133330523 has 4 divisors (see below), whose sum is σ = 320183727768. Its totient is φ = 320082933280.

The previous prime is 320133330509. The next prime is 320133330581. The reversal of 320133330523 is 325033331023.

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-320133330523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320133330491 and 320133330500.

It is not an unprimeable number, because it can be changed into a prime (320133339523) 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, 25189093 + ... + 25201798.

It is an arithmetic number, because the mean of its divisors is an integer number (80045931942).

Almost surely, 2^320133330523 is an apocalyptic number.

320133330523 is a deficient number, since it is larger than the sum of its proper divisors (50397245).

320133330523 is an equidigital number, since it uses as much as digits as its factorization.

320133330523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50397244.

The product of its (nonzero) digits is 14580, while the sum is 28.

Adding to 320133330523 its reverse (325033331023), we get a palindrome (645166661546).

The spelling of 320133330523 in words is "three hundred twenty billion, one hundred thirty-three million, three hundred thirty thousand, five hundred twenty-three".