11491223 has 2 divisors, whose sum is σ = 11491224. Its totient is φ = 11491222.

The previous prime is 11491217. The next prime is 11491229. The reversal of 11491223 is 32219411.

It is a balanced prime because it is at equal distance from previous prime (11491217) and next prime (11491229).

It is a cyclic number.

It is not a de Polignac number, because 11491223 - 2⁶ = 11491159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11491229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5745611 + 5745612.

It is an arithmetic number, because the mean of its divisors is an integer number (5745612).

Almost surely, 2^11491223 is an apocalyptic number.

11491223 is a deficient number, since it is larger than the sum of its proper divisors (1).

11491223 is an equidigital number, since it uses as much as digits as its factorization.

11491223 is an evil number, because the sum of its binary digits is even.

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

The square root of 11491223 is about 3389.8706464997. The cubic root of 11491223 is about 225.6604332234.

The spelling of 11491223 in words is "eleven million, four hundred ninety-one thousand, two hundred twenty-three".