1191223 has 4 divisors (see below), whose sum is σ = 1299528. Its totient is φ = 1082920.

The previous prime is 1191221. The next prime is 1191247. The reversal of 1191223 is 3221911.

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

It is a cyclic number.

It is not a de Polignac number, because 1191223 - 2¹ = 1191221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1191223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54136 + ... + 54157.

It is an arithmetic number, because the mean of its divisors is an integer number (324882).

2^1191223 is an apocalyptic number.

1191223 is a deficient number, since it is larger than the sum of its proper divisors (108305).

1191223 is a wasteful number, since it uses less digits than its factorization.

1191223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108304.

The product of its digits is 108, while the sum is 19.

The square root of 1191223 is about 1091.4316286419. The cubic root of 1191223 is about 106.0061406197.

It can be divided in two parts, 11912 and 23, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 1191223 in words is "one million, one hundred ninety-one thousand, two hundred twenty-three".