320538963 has 4 divisors (see below), whose sum is σ = 427385288. Its totient is φ = 213692640.

The previous prime is 320538947. The next prime is 320538973. The reversal of 320538963 is 369835023.

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

It is not a de Polignac number, because 320538963 - 2⁴ = 320538947 is a prime.

It is a super-2 number, since 2×320538963² = 205490453602230738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320538973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53423158 + ... + 53423163.

It is an arithmetic number, because the mean of its divisors is an integer number (106846322).

Almost surely, 2^320538963 is an apocalyptic number.

320538963 is a deficient number, since it is larger than the sum of its proper divisors (106846325).

320538963 is a wasteful number, since it uses less digits than its factorization.

320538963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106846324.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 320538963 is about 17903.6019560311. The cubic root of 320538963 is about 684.3741690197.

The spelling of 320538963 in words is "three hundred twenty million, five hundred thirty-eight thousand, nine hundred sixty-three".