13401403 has 6 divisors (see below), whose sum is σ = 14144244. Its totient is φ = 12695724.

The previous prime is 13401397. The next prime is 13401467. The reversal of 13401403 is 30410431.

It is not a de Polignac number, because 13401403 - 2¹⁷ = 13270331 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13401473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18201 + ... + 18922.

It is an arithmetic number, because the mean of its divisors is an integer number (2357374).

Almost surely, 2^13401403 is an apocalyptic number.

13401403 is a deficient number, since it is larger than the sum of its proper divisors (742841).

13401403 is an equidigital number, since it uses as much as digits as its factorization.

13401403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37161 (or 37142 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13401403 is about 3660.7926737252. The cubic root of 13401403 is about 237.5290631100.

Adding to 13401403 its reverse (30410431), we get a palindrome (43811834).

Subtracting 13401403 from its reverse (30410431), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 13401403 in words is "thirteen million, four hundred one thousand, four hundred three".