30665227 has 2 divisors, whose sum is σ = 30665228. Its totient is φ = 30665226.

The previous prime is 30665213. The next prime is 30665281. The reversal of 30665227 is 72256603.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30665227 is a prime.

It is a super-2 number, since 2×30665227² = 1880712293923058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30665287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15332613 + 15332614.

It is an arithmetic number, because the mean of its divisors is an integer number (15332614).

Almost surely, 2^30665227 is an apocalyptic number.

30665227 is a deficient number, since it is larger than the sum of its proper divisors (1).

30665227 is an equidigital number, since it uses as much as digits as its factorization.

30665227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 30665227 is about 5537.6192537949. The cubic root of 30665227 is about 313.0031642343.

The spelling of 30665227 in words is "thirty million, six hundred sixty-five thousand, two hundred twenty-seven".