1100023 has 2 divisors, whose sum is σ = 1100024.
Its totient is φ = 1100022.
The previous prime is 1100009. The next prime is 1100027. The reversal of 1100023 is 3200011.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1100023 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 1099979 and 1100015.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1100027) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550011 + 550012.
It is an arithmetic number, because the mean of its divisors is an integer number (550012).
21100023 is an apocalyptic number.
1100023 is a deficient number, since it is larger than the sum of its proper divisors (1).
1100023 is an equidigital number, since it uses as much as digits as its factorization.
1100023 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 6, while the sum is 7.
The square root of 1100023 is about 1048.8198129326.
The cubic root of 1100023 is about 103.2287310086.
Adding to 1100023 its reverse (3200011), we get a palindrome (4300034).
The spelling of 1100023 in words is "one million, one hundred thousand, twenty-three".