11331131332691 has 2 divisors, whose sum is σ = 11331131332692. Its totient is φ = 11331131332690.

The previous prime is 11331131332679. The next prime is 11331131332711. The reversal of 11331131332691 is 19623313113311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11331131332691 is a prime.

It is not a weakly prime, because it can be changed into another prime (11331131332291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665565666345 + 5665565666346.

It is an arithmetic number, because the mean of its divisors is an integer number (5665565666346).

Almost surely, 2^{11331131332691} is an apocalyptic number.

11331131332691 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331131332691 is an equidigital number, since it uses as much as digits as its factorization.

11331131332691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 38.

The spelling of 11331131332691 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-two thousand, six hundred ninety-one".