103403 has 4 divisors (see below), whose sum is σ = 105408. Its totient is φ = 101400.

The previous prime is 103399. The next prime is 103409. The reversal of 103403 is 304301.

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 103403 - 2² = 103399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 103403.

It is not an unprimeable number, because it can be changed into a prime (103409) 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 in 3 ways as a sum of consecutive naturals, for example, 923 + ... + 1028.

It is an arithmetic number, because the mean of its divisors is an integer number (26352).

2¹⁰³⁴⁰³ is an apocalyptic number.

103403 is a deficient number, since it is larger than the sum of its proper divisors (2005).

103403 is an equidigital number, since it uses as much as digits as its factorization.

103403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 103403 is about 321.5633685605. The cubic root of 103403 is about 46.9365372529.

Adding to 103403 its reverse (304301), we get a palindrome (407704).

The spelling of 103403 in words is "one hundred three thousand, four hundred three", and thus it is an iban number.