16311103 has 4 divisors (see below), whose sum is σ = 16320040. Its totient is φ = 16302168.

The previous prime is 16311089. The next prime is 16311107. The reversal of 16311103 is 30111361.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 30111361 = 7 ⋅4301623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16311103 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16311107) 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, 633 + ... + 5746.

It is an arithmetic number, because the mean of its divisors is an integer number (4080010).

Almost surely, 2^16311103 is an apocalyptic number.

16311103 is a deficient number, since it is larger than the sum of its proper divisors (8937).

16311103 is an equidigital number, since it uses as much as digits as its factorization.

16311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8936.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 16311103 is about 4038.7006573897. The cubic root of 16311103 is about 253.6069260665.

Adding to 16311103 its reverse (30111361), we get a palindrome (46422464).

The spelling of 16311103 in words is "sixteen million, three hundred eleven thousand, one hundred three".