30816361 has 2 divisors, whose sum is σ = 30816362. Its totient is φ = 30816360.

The previous prime is 30816319. The next prime is 30816367. The reversal of 30816361 is 16361803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16040025 + 14776336 = 4005^2 + 3844^2 .

It is a cyclic number.

It is not a de Polignac number, because 30816361 - 2²³ = 22427753 is a prime.

It is not a weakly prime, because it can be changed into another prime (30816367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15408180 + 15408181.

It is an arithmetic number, because the mean of its divisors is an integer number (15408181).

Almost surely, 2^30816361 is an apocalyptic number.

It is an amenable number.

30816361 is a deficient number, since it is larger than the sum of its proper divisors (1).

30816361 is an equidigital number, since it uses as much as digits as its factorization.

30816361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30816361 is about 5551.2485982885. The cubic root of 30816361 is about 313.5165352606.

The spelling of 30816361 in words is "thirty million, eight hundred sixteen thousand, three hundred sixty-one".