320523233 has 2 divisors, whose sum is σ = 320523234. Its totient is φ = 320523232.

The previous prime is 320523227. The next prime is 320523251. The reversal of 320523233 is 332325023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266603584 + 53919649 = 16328^2 + 7343^2 .

It is a cyclic number.

It is not a de Polignac number, because 320523233 - 2⁸ = 320522977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320523199 and 320523208.

It is not a weakly prime, because it can be changed into another prime (320523263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160261616 + 160261617.

It is an arithmetic number, because the mean of its divisors is an integer number (160261617).

Almost surely, 2^320523233 is an apocalyptic number.

It is an amenable number.

320523233 is a deficient number, since it is larger than the sum of its proper divisors (1).

320523233 is an equidigital number, since it uses as much as digits as its factorization.

320523233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 23.

The square root of 320523233 is about 17903.1626535649. The cubic root of 320523233 is about 684.3629739357.

Adding to 320523233 its reverse (332325023), we get a palindrome (652848256).

The spelling of 320523233 in words is "three hundred twenty million, five hundred twenty-three thousand, two hundred thirty-three".