30669161 has 2 divisors, whose sum is σ = 30669162. Its totient is φ = 30669160.

The previous prime is 30669151. The next prime is 30669167. The reversal of 30669161 is 16196603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25000000 + 5669161 = 5000^2 + 2381^2 .

It is an emirp because it is prime and its reverse (16196603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30669161 - 2¹⁰ = 30668137 is a prime.

It is not a weakly prime, because it can be changed into another prime (30669167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15334580 + 15334581.

It is an arithmetic number, because the mean of its divisors is an integer number (15334581).

Almost surely, 2^30669161 is an apocalyptic number.

It is an amenable number.

30669161 is a deficient number, since it is larger than the sum of its proper divisors (1).

30669161 is an equidigital number, since it uses as much as digits as its factorization.

30669161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 30669161 is about 5537.9744492007. The cubic root of 30669161 is about 313.0165485778.

The spelling of 30669161 in words is "thirty million, six hundred sixty-nine thousand, one hundred sixty-one".