13111001291 has 4 divisors (see below), whose sum is σ = 13111231512. Its totient is φ = 13110771072.

The previous prime is 13111001287. The next prime is 13111001353. The reversal of 13111001291 is 19210011131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13111001291 - 2² = 13111001287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111001221) 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, 39851 + ... + 166763.

It is an arithmetic number, because the mean of its divisors is an integer number (3277807878).

Almost surely, 2^13111001291 is an apocalyptic number.

13111001291 is a deficient number, since it is larger than the sum of its proper divisors (230221).

13111001291 is a wasteful number, since it uses less digits than its factorization.

13111001291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230220.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 13111001291 in words is "thirteen billion, one hundred eleven million, one thousand, two hundred ninety-one".