30211 has 2 divisors, whose sum is σ = 30212.
Its totient is φ = 30210.
The previous prime is 30203. The next prime is 30223. The reversal of 30211 is 11203.
Adding to 30211 its reverse (11203), we get a palindrome (41414).
It can be divided in two parts, 302 and 11, that added together give a palindrome (313).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 30211 - 23 = 30203 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 30194 and 30203.
It is not a weakly prime, because it can be changed into another prime (30241) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105 + 15106.
It is an arithmetic number, because the mean of its divisors is an integer number (15106).
230211 is an apocalyptic number.
30211 is a deficient number, since it is larger than the sum of its proper divisors (1).
30211 is an equidigital number, since it uses as much as digits as its factorization.
30211 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 30211 is about 173.8131180320.
The cubic root of 30211 is about 31.1450022771.
The spelling of 30211 in words is "thirty thousand, two hundred eleven".