1123305017 has 2 divisors, whose sum is σ = 1123305018. Its totient is φ = 1123305016.

The previous prime is 1123304999. The next prime is 1123305041. The reversal of 1123305017 is 7105033211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664659961 + 458645056 = 25781^2 + 21416^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123305017 - 2⁸ = 1123304761 is a prime.

It is a super-2 number, since 2×1123305017² = 2523628322434740578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123304983 and 1123305001.

It is not a weakly prime, because it can be changed into another prime (1123305067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561652508 + 561652509.

It is an arithmetic number, because the mean of its divisors is an integer number (561652509).

Almost surely, 2^1123305017 is an apocalyptic number.

It is an amenable number.

1123305017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123305017 is an equidigital number, since it uses as much as digits as its factorization.

1123305017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 1123305017 is about 33515.7428233360. The cubic root of 1123305017 is about 1039.5193220633.

Adding to 1123305017 its reverse (7105033211), we get a palindrome (8228338228).

The spelling of 1123305017 in words is "one billion, one hundred twenty-three million, three hundred five thousand, seventeen".