30211001 has 2 divisors, whose sum is σ = 30211002. Its totient is φ = 30211000.

The previous prime is 30210979. The next prime is 30211031. The reversal of 30211001 is 10011203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28079401 + 2131600 = 5299^2 + 1460^2 .

It is an emirp because it is prime and its reverse (10011203) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30211001 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30211001.

It is not a weakly prime, because it can be changed into another prime (30211031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105500 + 15105501.

It is an arithmetic number, because the mean of its divisors is an integer number (15105501).

Almost surely, 2^30211001 is an apocalyptic number.

It is an amenable number.

30211001 is a deficient number, since it is larger than the sum of its proper divisors (1).

30211001 is an equidigital number, since it uses as much as digits as its factorization.

30211001 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 8.

The square root of 30211001 is about 5496.4534929352. The cubic root of 30211001 is about 311.4500262072.

Adding to 30211001 its reverse (10011203), we get a palindrome (40222204).

The spelling of 30211001 in words is "thirty million, two hundred eleven thousand, one".