1161223 has 8 divisors (see below), whose sum is σ = 1397120. Its totient is φ = 942840.

The previous prime is 1161217. The next prime is 1161227. The reversal of 1161223 is 3221611.

1161223 = T₃₂₂ + T₃₂₃ + ... + T₃₄₂.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161197 and 1161206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4233 + ... + 4498.

It is an arithmetic number, because the mean of its divisors is an integer number (174640).

2^1161223 is an apocalyptic number.

1161223 is a deficient number, since it is larger than the sum of its proper divisors (235897).

1161223 is an equidigital number, since it uses as much as digits as its factorization.

1161223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8757.

The product of its digits is 72, while the sum is 16.

The square root of 1161223 is about 1077.6005753525. The cubic root of 1161223 is about 105.1086705605.

Adding to 1161223 its reverse (3221611), we get a palindrome (4382834).

The spelling of 1161223 in words is "one million, one hundred sixty-one thousand, two hundred twenty-three".