320201111 has 4 divisors (see below), whose sum is σ = 320313000. Its totient is φ = 320089224.

The previous prime is 320201081. The next prime is 320201117. The reversal of 320201111 is 111102023.

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 320201111 - 2⁶ = 320201047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320201092 and 320201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320201117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51536 + ... + 57413.

It is an arithmetic number, because the mean of its divisors is an integer number (80078250).

Almost surely, 2^320201111 is an apocalyptic number.

320201111 is a deficient number, since it is larger than the sum of its proper divisors (111889).

320201111 is a wasteful number, since it uses less digits than its factorization.

320201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111888.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 320201111 is about 17894.1641604183. The cubic root of 320201111 is about 684.1336382353.

Adding to 320201111 its reverse (111102023), we get a palindrome (431303134).

The spelling of 320201111 in words is "three hundred twenty million, two hundred one thousand, one hundred eleven".