1187223 has 4 divisors (see below), whose sum is σ = 1582968. Its totient is φ = 791480.

The previous prime is 1187201. The next prime is 1187227. The reversal of 1187223 is 3227811.

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 1187223 - 2⁶ = 1187159 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1187193 and 1187202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187227) 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, 197868 + ... + 197873.

It is an arithmetic number, because the mean of its divisors is an integer number (395742).

2^1187223 is an apocalyptic number.

1187223 is a deficient number, since it is larger than the sum of its proper divisors (395745).

1187223 is an equidigital number, since it uses as much as digits as its factorization.

1187223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395744.

The product of its digits is 672, while the sum is 24.

The square root of 1187223 is about 1089.5976321560. The cubic root of 1187223 is about 105.8873551195.

The spelling of 1187223 in words is "one million, one hundred eighty-seven thousand, two hundred twenty-three".