30228311 has 2 divisors, whose sum is σ = 30228312. Its totient is φ = 30228310.

The previous prime is 30228307. The next prime is 30228313. The reversal of 30228311 is 11382203.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30228311 - 2² = 30228307 is a prime.

Together with 30228313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30228313) 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, 15114155 + 15114156.

It is an arithmetic number, because the mean of its divisors is an integer number (15114156).

Almost surely, 2^30228311 is an apocalyptic number.

30228311 is a deficient number, since it is larger than the sum of its proper divisors (1).

30228311 is an equidigital number, since it uses as much as digits as its factorization.

30228311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 30228311 is about 5498.0279191725. The cubic root of 30228311 is about 311.5094986999.

The spelling of 30228311 in words is "thirty million, two hundred twenty-eight thousand, three hundred eleven".