1113223217 has 2 divisors, whose sum is σ = 1113223218. Its totient is φ = 1113223216.

The previous prime is 1113223201. The next prime is 1113223231. The reversal of 1113223217 is 7123223111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1018822561 + 94400656 = 31919^2 + 9716^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113223217 - 2⁴ = 1113223201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113223192 and 1113223201.

It is not a weakly prime, because it can be changed into another prime (1113223297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556611608 + 556611609.

It is an arithmetic number, because the mean of its divisors is an integer number (556611609).

Almost surely, 2^1113223217 is an apocalyptic number.

It is an amenable number.

1113223217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113223217 is an equidigital number, since it uses as much as digits as its factorization.

1113223217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 23.

The square root of 1113223217 is about 33364.9998801139. Note that the first 3 decimals coincide. The cubic root of 1113223217 is about 1036.4000336572.

Adding to 1113223217 its reverse (7123223111), we get a palindrome (8236446328).

The spelling of 1113223217 in words is "one billion, one hundred thirteen million, two hundred twenty-three thousand, two hundred seventeen".