1128223 has 2 divisors, whose sum is σ = 1128224. Its totient is φ = 1128222.

The previous prime is 1128209. The next prime is 1128227. The reversal of 1128223 is 3228211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1128223 - 2¹⁷ = 997151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1128223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128227) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564111 + 564112.

It is an arithmetic number, because the mean of its divisors is an integer number (564112).

2^1128223 is an apocalyptic number.

1128223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128223 is an equidigital number, since it uses as much as digits as its factorization.

1128223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 1128223 is about 1062.1784219235. The cubic root of 1128223 is about 104.1034166067.

The spelling of 1128223 in words is "one million, one hundred twenty-eight thousand, two hundred twenty-three".