30940211 has 2 divisors, whose sum is σ = 30940212. Its totient is φ = 30940210.

The previous prime is 30940163. The next prime is 30940213. The reversal of 30940211 is 11204903.

It is a strong prime.

It is an emirp because it is prime and its reverse (11204903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30940211 is a prime.

Together with 30940213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30940213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15470105 + 15470106.

It is an arithmetic number, because the mean of its divisors is an integer number (15470106).

Almost surely, 2^30940211 is an apocalyptic number.

30940211 is a deficient number, since it is larger than the sum of its proper divisors (1).

30940211 is an equidigital number, since it uses as much as digits as its factorization.

30940211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 30940211 is about 5562.3925607602. The cubic root of 30940211 is about 313.9359782655.

The spelling of 30940211 in words is "thirty million, nine hundred forty thousand, two hundred eleven".