1223109 has 12 divisors (see below), whose sum is σ = 1814956. Its totient is φ = 793152.

The previous prime is 1223093. The next prime is 1223119. The reversal of 1223109 is 9013221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 567009 + 656100 = 753^2 + 810^2 .

It is not a de Polignac number, because 1223109 - 2⁴ = 1223093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223091 and 1223100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223119) 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, 1504 + ... + 2169.

2^1223109 is an apocalyptic number.

It is an amenable number.

1223109 is a deficient number, since it is larger than the sum of its proper divisors (591847).

1223109 is a wasteful number, since it uses less digits than its factorization.

1223109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716 (or 3713 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1223109 is about 1105.9425844048. The cubic root of 1223109 is about 106.9436626593.

The spelling of 1223109 in words is "one million, two hundred twenty-three thousand, one hundred nine".