1010003 has 2 divisors, whose sum is σ = 1010004.
Its totient is φ = 1010002.
The previous prime is 1009997. The next prime is 1010033. The reversal of 1010003 is 3000101.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1010003 - 28 = 1009747 is a prime.
It is a Chen prime.
It is an Ulam number.
It is not a weakly prime, because it can be changed into another prime (1010033) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505001 + 505002.
It is an arithmetic number, because the mean of its divisors is an integer number (505002).
21010003 is an apocalyptic number.
1010003 is a deficient number, since it is larger than the sum of its proper divisors (1).
1010003 is an equidigital number, since it uses as much as digits as its factorization.
1010003 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3, while the sum is 5.
The square root of 1010003 is about 1004.9890546668.
The cubic root of 1010003 is about 100.3323276930.
Adding to 1010003 its reverse (3000101), we get a palindrome (4010104).
The spelling of 1010003 in words is "one million, ten thousand, three".