103440403 has 4 divisors (see below), whose sum is σ = 112844088. Its totient is φ = 94036720.

The previous prime is 103440377. The next prime is 103440409. The reversal of 103440403 is 304044301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304044301 = 11 ⋅27640391.

It is a cyclic number.

It is not a de Polignac number, because 103440403 - 2⁵ = 103440371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103440409) 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, 4701826 + ... + 4701847.

It is an arithmetic number, because the mean of its divisors is an integer number (28211022).

Almost surely, 2^103440403 is an apocalyptic number.

103440403 is a deficient number, since it is larger than the sum of its proper divisors (9403685).

103440403 is an equidigital number, since it uses as much as digits as its factorization.

103440403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9403684.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 103440403 is about 10170.5655201665. The cubic root of 103440403 is about 469.4219587558.

Adding to 103440403 its reverse (304044301), we get a palindrome (407484704).

The spelling of 103440403 in words is "one hundred three million, four hundred forty thousand, four hundred three".