13111101 has 6 divisors (see below), whose sum is σ = 18938270. Its totient is φ = 8740728.

The previous prime is 13111093. The next prime is 13111117. The reversal of 13111101 is 10111131.

13111101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9308601 + 3802500 = 3051^2 + 1950^2 .

It is not a de Polignac number, because 13111101 - 2³ = 13111093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1456789 = 13111101 / (1 + 3 + 1 + 1 + 1 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 728386 + ... + 728403.

Almost surely, 2^13111101 is an apocalyptic number.

It is an amenable number.

13111101 is a deficient number, since it is larger than the sum of its proper divisors (5827169).

13111101 is a wasteful number, since it uses less digits than its factorization.

13111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456795 (or 1456792 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

The square root of 13111101 is about 3620.9254341950. The cubic root of 13111101 is about 235.8014045545.

Adding to 13111101 its reverse (10111131), we get a palindrome (23222232).

The spelling of 13111101 in words is "thirteen million, one hundred eleven thousand, one hundred one".