320311103 has 4 divisors (see below), whose sum is σ = 366069840. Its totient is φ = 274552368.

The previous prime is 320311091. The next prime is 320311129. The reversal of 320311103 is 301113023.

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 320311103 - 2¹⁰ = 320310079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320311903) 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, 22879358 + ... + 22879371.

It is an arithmetic number, because the mean of its divisors is an integer number (91517460).

Almost surely, 2^320311103 is an apocalyptic number.

320311103 is a deficient number, since it is larger than the sum of its proper divisors (45758737).

320311103 is an equidigital number, since it uses as much as digits as its factorization.

320311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45758736.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 320311103 is about 17897.2373007680. The cubic root of 320311103 is about 684.2119646473.

Adding to 320311103 its reverse (301113023), we get a palindrome (621424126).

The spelling of 320311103 in words is "three hundred twenty million, three hundred eleven thousand, one hundred three".