11131001291 has 8 divisors (see below), whose sum is σ = 11315716224. Its totient is φ = 10946358720.

The previous prime is 11131001269. The next prime is 11131001309. The reversal of 11131001291 is 19210013111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131001291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131001201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355430 + ... + 385476.

It is an arithmetic number, because the mean of its divisors is an integer number (1414464528).

Almost surely, 2^11131001291 is an apocalyptic number.

11131001291 is a deficient number, since it is larger than the sum of its proper divisors (184714933).

11131001291 is an equidigital number, since it uses as much as digits as its factorization.

11131001291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36181.

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

The spelling of 11131001291 in words is "eleven billion, one hundred thirty-one million, one thousand, two hundred ninety-one".