1123017817 has 2 divisors, whose sum is σ = 1123017818. Its totient is φ = 1123017816.

The previous prime is 1123017761. The next prime is 1123017823. The reversal of 1123017817 is 7187103211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 859896976 + 263120841 = 29324^2 + 16221^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123017817 - 2²³ = 1114629209 is a prime.

It is a super-2 number, since 2×1123017817² = 2522338034598890978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123017877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561508908 + 561508909.

It is an arithmetic number, because the mean of its divisors is an integer number (561508909).

Almost surely, 2^1123017817 is an apocalyptic number.

It is an amenable number.

1123017817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123017817 is an equidigital number, since it uses as much as digits as its factorization.

1123017817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 1123017817 is about 33511.4579957363. The cubic root of 1123017817 is about 1039.4307217894.

The spelling of 1123017817 in words is "one billion, one hundred twenty-three million, seventeen thousand, eight hundred seventeen".