320203310111 has 4 divisors (see below), whose sum is σ = 321879767424. Its totient is φ = 318526852800.

The previous prime is 320203310083. The next prime is 320203310159. The reversal of 320203310111 is 111013302023.

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

It is a cyclic number.

It is not a de Polignac number, because 320203310111 - 2⁶ = 320203310047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320203310111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320203310411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838228370 + ... + 838228751.

It is an arithmetic number, because the mean of its divisors is an integer number (80469941856).

Almost surely, 2^320203310111 is an apocalyptic number.

320203310111 is a deficient number, since it is larger than the sum of its proper divisors (1676457313).

320203310111 is a wasteful number, since it uses less digits than its factorization.

320203310111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676457312.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 320203310111 its reverse (111013302023), we get a palindrome (431216612134).

The spelling of 320203310111 in words is "three hundred twenty billion, two hundred three million, three hundred ten thousand, one hundred eleven".