13897123 has 4 divisors (see below), whose sum is σ = 13906080. Its totient is φ = 13888168.

The previous prime is 13897111. The next prime is 13897139. The reversal of 13897123 is 32179831.

13897123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13897123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13897223) 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 3 ways as a sum of consecutive naturals, for example, 1483 + ... + 5476.

It is an arithmetic number, because the mean of its divisors is an integer number (3476520).

Almost surely, 2^13897123 is an apocalyptic number.

13897123 is a deficient number, since it is larger than the sum of its proper divisors (8957).

13897123 is an equidigital number, since it uses as much as digits as its factorization.

13897123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8956.

The product of its digits is 9072, while the sum is 34.

The square root of 13897123 is about 3727.8845207436. The cubic root of 13897123 is about 240.4224215731.

The spelling of 13897123 in words is "thirteen million, eight hundred ninety-seven thousand, one hundred twenty-three".