1123323217 has 2 divisors, whose sum is σ = 1123323218. Its totient is φ = 1123323216.

The previous prime is 1123323211. The next prime is 1123323221. The reversal of 1123323217 is 7123233211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1123322256 + 961 = 33516^2 + 31^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123323217 - 2¹¹ = 1123321169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123323191 and 1123323200.

It is not a weakly prime, because it can be changed into another prime (1123323211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561661608 + 561661609.

It is an arithmetic number, because the mean of its divisors is an integer number (561661609).

Almost surely, 2^1123323217 is an apocalyptic number.

It is an amenable number.

1123323217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123323217 is an equidigital number, since it uses as much as digits as its factorization.

1123323217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 25.

The square root of 1123323217 is about 33516.0143364333. The cubic root of 1123323217 is about 1039.5249361958.

Adding to 1123323217 its reverse (7123233211), we get a palindrome (8246556428).

It can be divided in two parts, 112 and 3323217, that added together give a square (3323329 = 1823²).

The spelling of 1123323217 in words is "one billion, one hundred twenty-three million, three hundred twenty-three thousand, two hundred seventeen".