11691041 has 2 divisors, whose sum is σ = 11691042. Its totient is φ = 11691040.

The previous prime is 11691037. The next prime is 11691047. The reversal of 11691041 is 14019611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7447441 + 4243600 = 2729^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 11691041 - 2² = 11691037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11690998 and 11691016.

It is not a weakly prime, because it can be changed into another prime (11691047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5845520 + 5845521.

It is an arithmetic number, because the mean of its divisors is an integer number (5845521).

Almost surely, 2^11691041 is an apocalyptic number.

It is an amenable number.

11691041 is a deficient number, since it is larger than the sum of its proper divisors (1).

11691041 is an equidigital number, since it uses as much as digits as its factorization.

11691041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 11691041 is about 3419.2164307046. The cubic root of 11691041 is about 226.9609084813.

The spelling of 11691041 in words is "eleven million, six hundred ninety-one thousand, forty-one".