12381103 has 16 divisors (see below), whose sum is σ = 15032320. Its totient is φ = 9961056.

The previous prime is 12381073. The next prime is 12381113. The reversal of 12381103 is 30118321.

It is a de Polignac number, because none of the positive numbers 2^k-12381103 is a prime.

It is a super-2 number, since 2×12381103² = 306583422993218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16525 + ... + 17257.

It is an arithmetic number, because the mean of its divisors is an integer number (939520).

Almost surely, 2^12381103 is an apocalyptic number.

12381103 is a deficient number, since it is larger than the sum of its proper divisors (2651217).

12381103 is a wasteful number, since it uses less digits than its factorization.

12381103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 12381103 is about 3518.6791555923. The cubic root of 12381103 is about 231.3412682838.

Adding to 12381103 its reverse (30118321), we get a palindrome (42499424).

The spelling of 12381103 in words is "twelve million, three hundred eighty-one thousand, one hundred three".