30230055181 has 2 divisors, whose sum is σ = 30230055182.
Its totient is φ = 30230055180.
The previous prime is 30230055047. The next prime is 30230055187. The reversal of 30230055181 is 18155003203.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 29084232681 + 1145822500 = 170541^2 + 33850^2
It is a cyclic number.
It is not a de Polignac number, because 30230055181 - 233 = 21640120589 is a prime.
It is a super-2 number, since 2×302300551812 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30230055187) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15115027590 + 15115027591.
It is an arithmetic number, because the mean of its divisors is an integer number (15115027591).
Almost surely, 230230055181 is an apocalyptic number.
It is an amenable number.
30230055181 is a deficient number, since it is larger than the sum of its proper divisors (1).
30230055181 is an equidigital number, since it uses as much as digits as its factorization.
30230055181 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 3600, while the sum is 28.
Adding to 30230055181 its reverse (18155003203), we get a palindrome (48385058384).
The spelling of 30230055181 in words is "thirty billion, two hundred thirty million, fifty-five thousand, one hundred eighty-one".