30180181 has 2 divisors, whose sum is σ = 30180182. Its totient is φ = 30180180.

The previous prime is 30180179. The next prime is 30180191. The reversal of 30180181 is 18108103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28836900 + 1343281 = 5370^2 + 1159^2 .

It is a cyclic number.

It is not a de Polignac number, because 30180181 - 2¹ = 30180179 is a prime.

It is a super-2 number, since 2×30180181² = 1821686650385522, which contains 22 as substring.

Together with 30180179, 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 (30180131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15090090 + 15090091.

It is an arithmetic number, because the mean of its divisors is an integer number (15090091).

Almost surely, 2^30180181 is an apocalyptic number.

It is an amenable number.

30180181 is a deficient number, since it is larger than the sum of its proper divisors (1).

30180181 is an equidigital number, since it uses as much as digits as its factorization.

30180181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 30180181 is about 5493.6491515203. The cubic root of 30180181 is about 311.3440807406.

Adding to 30180181 its reverse (18108103), we get a palindrome (48288284).

The spelling of 30180181 in words is "thirty million, one hundred eighty thousand, one hundred eighty-one".