13111001 has 4 divisors (see below), whose sum is σ = 13415952. Its totient is φ = 12806052.

The previous prime is 13110997. The next prime is 13111009. The reversal of 13111001 is 10011131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13111001 - 2² = 13110997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13111001.

It is not an unprimeable number, because it can be changed into a prime (13111009) 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, 152411 + ... + 152496.

It is an arithmetic number, because the mean of its divisors is an integer number (3353988).

Almost surely, 2^13111001 is an apocalyptic number.

It is an amenable number.

13111001 is a deficient number, since it is larger than the sum of its proper divisors (304951).

13111001 is an equidigital number, since it uses as much as digits as its factorization.

13111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304950.

The product of its (nonzero) digits is 3, while the sum is 8.

The square root of 13111001 is about 3620.9116255440. The cubic root of 13111001 is about 235.8008050574.

Adding to 13111001 its reverse (10011131), we get a palindrome (23122132).

The spelling of 13111001 in words is "thirteen million, one hundred eleven thousand, one".