2011003 has 2 divisors, whose sum is σ = 2011004.
Its totient is φ = 2011002.
The previous prime is 2010977. The next prime is 2011019. The reversal of 2011003 is 3001102.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 2011003 - 25 = 2010971 is a prime.
2011003 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (2011033) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005501 + 1005502.
It is an arithmetic number, because the mean of its divisors is an integer number (1005502).
22011003 is an apocalyptic number.
2011003 is a deficient number, since it is larger than the sum of its proper divisors (1).
2011003 is an equidigital number, since it uses as much as digits as its factorization.
2011003 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 6, while the sum is 7.
The square root of 2011003 is about 1418.0983745848.
The cubic root of 2011003 is about 126.2227310971.
Note that the first 3 decimals are identical.
Adding to 2011003 its reverse (3001102), we get a palindrome (5012105).
Subtracting 2011003 from its reverse (3001102), we obtain a palindrome (990099).
The spelling of 2011003 in words is "two million, eleven thousand, three".