30642361 has 2 divisors, whose sum is σ = 30642362. Its totient is φ = 30642360.

The previous prime is 30642301. The next prime is 30642373. The reversal of 30642361 is 16324603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20529961 + 10112400 = 4531^2 + 3180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30642361 is a prime.

It is not a weakly prime, because it can be changed into another prime (30642301) 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, 15321180 + 15321181.

It is an arithmetic number, because the mean of its divisors is an integer number (15321181).

Almost surely, 2^30642361 is an apocalyptic number.

It is an amenable number.

30642361 is a deficient number, since it is larger than the sum of its proper divisors (1).

30642361 is an equidigital number, since it uses as much as digits as its factorization.

30642361 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 25.

The square root of 30642361 is about 5535.5542631249. The cubic root of 30642361 is about 312.9253463416.

Adding to 30642361 its reverse (16324603), we get a palindrome (46966964).

The spelling of 30642361 in words is "thirty million, six hundred forty-two thousand, three hundred sixty-one".