30410021 has 2 divisors, whose sum is σ = 30410022. Its totient is φ = 30410020.

The previous prime is 30410011. The next prime is 30410033. The reversal of 30410021 is 12001403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30129121 + 280900 = 5489^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 30410021 - 2¹⁰ = 30408997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30409984 and 30410011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30410011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15205010 + 15205011.

It is an arithmetic number, because the mean of its divisors is an integer number (15205011).

Almost surely, 2^30410021 is an apocalyptic number.

It is an amenable number.

30410021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30410021 is an equidigital number, since it uses as much as digits as its factorization.

30410021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 30410021 is about 5514.5281756466. The cubic root of 30410021 is about 312.1324395273.

Adding to 30410021 its reverse (12001403), we get a palindrome (42411424).

The spelling of 30410021 in words is "thirty million, four hundred ten thousand, twenty-one".