30030181 has 2 divisors, whose sum is σ = 30030182. Its totient is φ = 30030180.

The previous prime is 30030179. The next prime is 30030269. The reversal of 30030181 is 18103003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26936100 + 3094081 = 5190^2 + 1759^2 .

It is an emirp because it is prime and its reverse (18103003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30030181 - 2¹ = 30030179 is a prime.

It is a super-2 number, since 2×30030181² = 1803623541785522, which contains 22 as substring.

Together with 30030179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30030101) 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, 15015090 + 15015091.

It is an arithmetic number, because the mean of its divisors is an integer number (15015091).

Almost surely, 2^30030181 is an apocalyptic number.

It is an amenable number.

30030181 is a deficient number, since it is larger than the sum of its proper divisors (1).

30030181 is an equidigital number, since it uses as much as digits as its factorization.

30030181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 30030181 is about 5479.9800182117. The cubic root of 30030181 is about 310.8274149881.

Adding to 30030181 its reverse (18103003), we get a palindrome (48133184).

The spelling of 30030181 in words is "thirty million, thirty thousand, one hundred eighty-one".