13111903 has 8 divisors (see below), whose sum is σ = 15032960. Its totient is φ = 11202840.

The previous prime is 13111897. The next prime is 13111907. The reversal of 13111903 is 30911131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13111903 - 2⁵ = 13111871 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 (13111907) 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 7 ways as a sum of consecutive naturals, for example, 513 + ... + 5146.

It is an arithmetic number, because the mean of its divisors is an integer number (1879120).

Almost surely, 2^13111903 is an apocalyptic number.

13111903 is a deficient number, since it is larger than the sum of its proper divisors (1921057).

13111903 is an equidigital number, since it uses as much as digits as its factorization.

13111903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5997.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 13111903 is about 3621.0361776707. The cubic root of 13111903 is about 235.8062124109.

The spelling of 13111903 in words is "thirteen million, one hundred eleven thousand, nine hundred three".