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30230055181 is a prime number
BaseRepresentation
bin11100001001110110…
…100000100100001101
32220000210011220202101
4130021312200210031
5443402343231211
621515410555101
72120062141444
oct341166404415
986023156671
1030230055181
1111903094987
125a37b98a91
132b09c43521
14166ac11d5b
15bbde1d5c1
hex709da090d

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".