1123017823 has 2 divisors, whose sum is σ = 1123017824. Its totient is φ = 1123017822.

The previous prime is 1123017817. The next prime is 1123017853. The reversal of 1123017823 is 3287103211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123017823 is a prime.

It is a super-2 number, since 2×1123017823² = 2522338061551318658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123017791 and 1123017800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123017853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561508911 + 561508912.

It is an arithmetic number, because the mean of its divisors is an integer number (561508912).

Almost surely, 2^1123017823 is an apocalyptic number.

1123017823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123017823 is an equidigital number, since it uses as much as digits as its factorization.

1123017823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1123017823 is about 33511.4580852579. The cubic root of 1123017823 is about 1039.4307236405.

The spelling of 1123017823 in words is "one billion, one hundred twenty-three million, seventeen thousand, eight hundred twenty-three".