11331131320191 has 4 divisors (see below), whose sum is σ = 15108175093592. Its totient is φ = 7554087546792.

The previous prime is 11331131320189. The next prime is 11331131320193. The reversal of 11331131320191 is 19102313113311.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11331131320189) and next prime (11331131320193).

It is not a de Polignac number, because 11331131320191 - 2¹ = 11331131320189 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 (11331131320193) 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, 1888521886696 + ... + 1888521886701.

It is an arithmetic number, because the mean of its divisors is an integer number (3777043773398).

Almost surely, 2^{11331131320191} is an apocalyptic number.

11331131320191 is a deficient number, since it is larger than the sum of its proper divisors (3777043773401).

11331131320191 is an equidigital number, since it uses as much as digits as its factorization.

11331131320191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777043773400.

The product of its (nonzero) digits is 1458, while the sum is 30.

The spelling of 11331131320191 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred twenty thousand, one hundred ninety-one".