13423403 has 12 divisors (see below), whose sum is σ = 16120512. Its totient is φ = 11133360.

The previous prime is 13423391. The next prime is 13423409. The reversal of 13423403 is 30432431.

It is not a de Polignac number, because 13423403 - 2⁶ = 13423339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2900 + ... + 5937.

It is an arithmetic number, because the mean of its divisors is an integer number (1343376).

Almost surely, 2^13423403 is an apocalyptic number.

13423403 is a deficient number, since it is larger than the sum of its proper divisors (2697109).

13423403 is an equidigital number, since it uses as much as digits as its factorization.

13423403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8882 (or 8875 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 13423403 is about 3663.7962552522. The cubic root of 13423403 is about 237.6589694711.

Adding to 13423403 its reverse (30432431), we get a palindrome (43855834).

Subtracting 13423403 from its reverse (30432431), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 13423403 in words is "thirteen million, four hundred twenty-three thousand, four hundred three".