13151903 has 4 divisors (see below), whose sum is σ = 13179840. Its totient is φ = 13123968.

The previous prime is 13151861. The next prime is 13151911. The reversal of 13151903 is 30915131.

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 13151903 - 2⁶ = 13151839 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 (13151923) 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, 13250 + ... + 14207.

It is an arithmetic number, because the mean of its divisors is an integer number (3294960).

Almost surely, 2^13151903 is an apocalyptic number.

13151903 is a deficient number, since it is larger than the sum of its proper divisors (27937).

13151903 is an equidigital number, since it uses as much as digits as its factorization.

13151903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27936.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 13151903 is about 3626.5552525779. Note that the first 3 decimals coincide. The cubic root of 13151903 is about 236.0457574304.

The spelling of 13151903 in words is "thirteen million, one hundred fifty-one thousand, nine hundred three".