13111423 has 4 divisors (see below), whose sum is σ = 14120008. Its totient is φ = 12102840.

The previous prime is 13111411. The next prime is 13111429. The reversal of 13111423 is 32411131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32411131 = 19 ⋅1705849.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13111423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13111397 and 13111406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111429) 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, 504273 + ... + 504298.

It is an arithmetic number, because the mean of its divisors is an integer number (3530002).

Almost surely, 2^13111423 is an apocalyptic number.

13111423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13111423 is a deficient number, since it is larger than the sum of its proper divisors (1008585).

13111423 is a wasteful number, since it uses less digits than its factorization.

13111423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008584.

The product of its digits is 72, while the sum is 16.

The square root of 13111423 is about 3620.9698976932. The cubic root of 13111423 is about 235.8033349144.

Adding to 13111423 its reverse (32411131), we get a palindrome (45522554).

The spelling of 13111423 in words is "thirteen million, one hundred eleven thousand, four hundred twenty-three".