1123163081 has 2 divisors, whose sum is σ = 1123163082. Its totient is φ = 1123163080.

The previous prime is 1123163051. The next prime is 1123163087. The reversal of 1123163081 is 1803613211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009015225 + 114147856 = 31765^2 + 10684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123163081 - 2¹⁰ = 1123162057 is a prime.

It is a super-2 number, since 2×1123163081² = 2522990613042825122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123163081.

It is not a weakly prime, because it can be changed into another prime (1123163087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561581540 + 561581541.

It is an arithmetic number, because the mean of its divisors is an integer number (561581541).

Almost surely, 2^1123163081 is an apocalyptic number.

It is an amenable number.

1123163081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123163081 is an equidigital number, since it uses as much as digits as its factorization.

1123163081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1123163081 is about 33513.6253037477. The cubic root of 1123163081 is about 1039.4755371527.

Adding to 1123163081 its reverse (1803613211), we get a palindrome (2926776292).

The spelling of 1123163081 in words is "one billion, one hundred twenty-three million, one hundred sixty-three thousand, eighty-one".