103900403 has 4 divisors (see below), whose sum is σ = 106708560. Its totient is φ = 101092248.

The previous prime is 103900399. The next prime is 103900411. The reversal of 103900403 is 304009301.

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 103900403 - 2² = 103900399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103906403) 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, 1404023 + ... + 1404096.

It is an arithmetic number, because the mean of its divisors is an integer number (26677140).

Almost surely, 2^103900403 is an apocalyptic number.

103900403 is a deficient number, since it is larger than the sum of its proper divisors (2808157).

103900403 is an equidigital number, since it uses as much as digits as its factorization.

103900403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808156.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 103900403 is about 10193.1547128453. The cubic root of 103900403 is about 470.1167704430.

Adding to 103900403 its reverse (304009301), we get a palindrome (407909704).

The spelling of 103900403 in words is "one hundred three million, nine hundred thousand, four hundred three".