320140111 has 4 divisors (see below), whose sum is σ = 320194224. Its totient is φ = 320086000.

The previous prime is 320140109. The next prime is 320140127. The reversal of 320140111 is 111041023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111041023 = 9767 ⋅11369.

It is a cyclic number.

It is not a de Polignac number, because 320140111 - 2¹ = 320140109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320140091 and 320140100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320140211) 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, 16915 + ... + 30436.

It is an arithmetic number, because the mean of its divisors is an integer number (80048556).

Almost surely, 2^320140111 is an apocalyptic number.

320140111 is a deficient number, since it is larger than the sum of its proper divisors (54113).

320140111 is an equidigital number, since it uses as much as digits as its factorization.

320140111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54112.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 320140111 is about 17892.4596129207. The cubic root of 320140111 is about 684.0901917878.

Adding to 320140111 its reverse (111041023), we get a palindrome (431181134).

The spelling of 320140111 in words is "three hundred twenty million, one hundred forty thousand, one hundred eleven".