18323103 has 16 divisors (see below), whose sum is σ = 25214976. Its totient is φ = 11826720.

The previous prime is 18323089. The next prime is 18323113. The reversal of 18323103 is 30132381.

It is a happy number.

It is not a de Polignac number, because 18323103 - 2⁸ = 18322847 is a prime.

It is a super-2 number, since 2×18323103² = 671472207097218, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18323103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18323113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42298 + ... + 42728.

It is an arithmetic number, because the mean of its divisors is an integer number (1575936).

Almost surely, 2^18323103 is an apocalyptic number.

18323103 is a deficient number, since it is larger than the sum of its proper divisors (6891873).

18323103 is a wasteful number, since it uses less digits than its factorization.

18323103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 18323103 is about 4280.5493806286. The cubic root of 18323103 is about 263.6329408737.

Adding to 18323103 its reverse (30132381), we get a palindrome (48455484).

The spelling of 18323103 in words is "eighteen million, three hundred twenty-three thousand, one hundred three".