381103 has 2 divisors, whose sum is σ = 381104. Its totient is φ = 381102.

The previous prime is 381097. The next prime is 381167. The reversal of 381103 is 301183.

It is a weak prime.

It is an emirp because it is prime and its reverse (301183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381103 - 2⁵ = 381071 is a prime.

381103 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (382103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190551 + 190552.

It is an arithmetic number, because the mean of its divisors is an integer number (190552).

2³⁸¹¹⁰³ is an apocalyptic number.

381103 is a deficient number, since it is larger than the sum of its proper divisors (1).

381103 is an equidigital number, since it uses as much as digits as its factorization.

381103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 381103 is about 617.3354031643. The cubic root of 381103 is about 72.5015774528.

Adding to 381103 its reverse (301183), we get a palindrome (682286).

It can be divided in two parts, 381 and 103, that added together give a palindrome (484).

The spelling of 381103 in words is "three hundred eighty-one thousand, one hundred three".