11491043 has 2 divisors, whose sum is σ = 11491044. Its totient is φ = 11491042.

The previous prime is 11491037. The next prime is 11491061. The reversal of 11491043 is 34019411.

It is a weak prime.

It is an emirp because it is prime and its reverse (34019411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11491043 - 2²² = 7296739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11491013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5745521 + 5745522.

It is an arithmetic number, because the mean of its divisors is an integer number (5745522).

Almost surely, 2^11491043 is an apocalyptic number.

11491043 is a deficient number, since it is larger than the sum of its proper divisors (1).

11491043 is an equidigital number, since it uses as much as digits as its factorization.

11491043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 11491043 is about 3389.8440967101. The cubic root of 11491043 is about 225.6592549592.

The spelling of 11491043 in words is "eleven million, four hundred ninety-one thousand, forty-three".