13140111 has 4 divisors (see below), whose sum is σ = 17520152. Its totient is φ = 8760072.

The previous prime is 13140109. The next prime is 13140137. The reversal of 13140111 is 11104131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11104131 = 3 ⋅3701377.

It is not a de Polignac number, because 13140111 - 2¹ = 13140109 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 (13140151) 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, 2190016 + ... + 2190021.

It is an arithmetic number, because the mean of its divisors is an integer number (4380038).

Almost surely, 2^13140111 is an apocalyptic number.

13140111 is a deficient number, since it is larger than the sum of its proper divisors (4380041).

13140111 is an equidigital number, since it uses as much as digits as its factorization.

13140111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380040.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 13140111 is about 3624.9291027550. The cubic root of 13140111 is about 235.9751901047.

Adding to 13140111 its reverse (11104131), we get a palindrome (24244242).

The spelling of 13140111 in words is "thirteen million, one hundred forty thousand, one hundred eleven".