320313523 has 2 divisors, whose sum is σ = 320313524. Its totient is φ = 320313522.

The previous prime is 320313491. The next prime is 320313557. The reversal of 320313523 is 325313023.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320313523 - 2⁵ = 320313491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320313494 and 320313503.

It is not a weakly prime, because it can be changed into another prime (320313583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160156761 + 160156762.

It is an arithmetic number, because the mean of its divisors is an integer number (160156762).

Almost surely, 2^320313523 is an apocalyptic number.

320313523 is a deficient number, since it is larger than the sum of its proper divisors (1).

320313523 is an equidigital number, since it uses as much as digits as its factorization.

320313523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 320313523 is about 17897.3049088403. The cubic root of 320313523 is about 684.2136877521.

Adding to 320313523 its reverse (325313023), we get a palindrome (645626546).

The spelling of 320313523 in words is "three hundred twenty million, three hundred thirteen thousand, five hundred twenty-three".