320801923 has 4 divisors (see below), whose sum is σ = 345479008. Its totient is φ = 296124840.

The previous prime is 320801879. The next prime is 320801977. The reversal of 320801923 is 329108023.

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-320801923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320801891 and 320801900.

It is not an unprimeable number, because it can be changed into a prime (320807923) 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, 12338523 + ... + 12338548.

It is an arithmetic number, because the mean of its divisors is an integer number (86369752).

Almost surely, 2^320801923 is an apocalyptic number.

320801923 is a deficient number, since it is larger than the sum of its proper divisors (24677085).

320801923 is a wasteful number, since it uses less digits than its factorization.

320801923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24677084.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 320801923 is about 17910.9442241329. The cubic root of 320801923 is about 684.5612641549.

Adding to 320801923 its reverse (329108023), we get a palindrome (649909946).

The spelling of 320801923 in words is "three hundred twenty million, eight hundred one thousand, nine hundred twenty-three".