13140223 has 4 divisors (see below), whose sum is σ = 13153048. Its totient is φ = 13127400.

The previous prime is 13140221. The next prime is 13140271. The reversal of 13140223 is 32204131.

It is a happy number.

13140223 is digitally balanced in base 2, 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.

It is a cyclic number.

It is not a de Polignac number, because 13140223 - 2¹ = 13140221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13140197 and 13140206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140221) 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, 4728 + ... + 6973.

It is an arithmetic number, because the mean of its divisors is an integer number (3288262).

Almost surely, 2^13140223 is an apocalyptic number.

13140223 is a deficient number, since it is larger than the sum of its proper divisors (12825).

13140223 is a wasteful number, since it uses less digits than its factorization.

13140223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12824.

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

The square root of 13140223 is about 3624.9445513001. The cubic root of 13140223 is about 235.9758605493.

Adding to 13140223 its reverse (32204131), we get a palindrome (45344354).

The spelling of 13140223 in words is "thirteen million, one hundred forty thousand, two hundred twenty-three".