1181223 has 12 divisors (see below), whose sum is σ = 1769768. Its totient is φ = 787320.

The previous prime is 1181209. The next prime is 1181237. The reversal of 1181223 is 3221811.

It is an interprime number because it is at equal distance from previous prime (1181209) and next prime (1181237).

It is not a de Polignac number, because 1181223 - 2¹⁷ = 1050151 is a prime.

It is a Duffinian number.

1181223 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1181196 and 1181205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2188 + ... + 2673.

2^1181223 is an apocalyptic number.

1181223 is a deficient number, since it is larger than the sum of its proper divisors (588545).

1181223 is an frugal number, since it uses more digits than its factorization.

1181223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4876 (or 4864 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1181223 is about 1086.8408347132. The cubic root of 1181223 is about 105.7086755693.

The spelling of 1181223 in words is "one million, one hundred eighty-one thousand, two hundred twenty-three".