1171223 has 4 divisors (see below), whose sum is σ = 1211640. Its totient is φ = 1130808.

The previous prime is 1171207. The next prime is 1171231. The reversal of 1171223 is 3221711.

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 1171223 - 2⁴ = 1171207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20165 + ... + 20222.

It is an arithmetic number, because the mean of its divisors is an integer number (302910).

2^1171223 is an apocalyptic number.

1171223 is a deficient number, since it is larger than the sum of its proper divisors (40417).

1171223 is an equidigital number, since it uses as much as digits as its factorization.

1171223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40416.

The product of its digits is 84, while the sum is 17.

The square root of 1171223 is about 1082.2305669311. The cubic root of 1171223 is about 105.4095268919.

Adding to 1171223 its reverse (3221711), we get a palindrome (4392934).

The spelling of 1171223 in words is "one million, one hundred seventy-one thousand, two hundred twenty-three".