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30107108197 = 61349114369
BaseRepresentation
bin11100000010100001…
…100000001101100101
32212201012211120012101
4130002201200031211
5443124404430242
621455255452101
72114040124435
oct340241401545
985635746171
1030107108197
111184a750001
125a02987031
132aba62712a
14165876a2c5
15bb32349b7
hex702860365

30107108197 has 4 divisors (see below), whose sum is σ = 30156223180. Its totient is φ = 30057993216.

The previous prime is 30107108191. The next prime is 30107108219. The reversal of 30107108197 is 79180170103.

It is a Cunningham number, because it is equal to 1735142+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79180170103 = 206338381081.

It can be written as a sum of positive squares in 2 ways, for example, as 98128836 + 30008979361 = 9906^2 + 173231^2 .

It is a cyclic number.

It is not a de Polignac number, because 30107108197 - 23 = 30107108189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30107108191) 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 in 3 ways as a sum of consecutive naturals, for example, 24556572 + ... + 24557797.

It is an arithmetic number, because the mean of its divisors is an integer number (7539055795).

Almost surely, 230107108197 is an apocalyptic number.

It is an amenable number.

30107108197 is a deficient number, since it is larger than the sum of its proper divisors (49114983).

30107108197 is an equidigital number, since it uses as much as digits as its factorization.

30107108197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49114982.

The product of its (nonzero) digits is 10584, while the sum is 37.

The spelling of 30107108197 in words is "thirty billion, one hundred seven million, one hundred eight thousand, one hundred ninety-seven".

Divisors: 1 613 49114369 30107108197