30411421 has 2 divisors, whose sum is σ = 30411422. Its totient is φ = 30411420.

The previous prime is 30411361. The next prime is 30411431. The reversal of 30411421 is 12411403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30404196 + 7225 = 5514^2 + 85^2 .

It is an emirp because it is prime and its reverse (12411403) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30411421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30411395 and 30411404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30411431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15205710 + 15205711.

It is an arithmetic number, because the mean of its divisors is an integer number (15205711).

Almost surely, 2^30411421 is an apocalyptic number.

It is an amenable number.

30411421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30411421 is an equidigital number, since it uses as much as digits as its factorization.

30411421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 30411421 is about 5514.6551116094. The cubic root of 30411421 is about 312.1372293816.

Adding to 30411421 its reverse (12411403), we get a palindrome (42822824).

The spelling of 30411421 in words is "thirty million, four hundred eleven thousand, four hundred twenty-one".