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30000002101 = 191578947479
BaseRepresentation
bin11011111100001000…
…111011010000110101
32212102202022000020221
4123330020323100311
5442420000031401
621440512054341
72111266544656
oct337410732065
985382260227
1030000002101
11117a5245673
125992b343b1
132aa1396044
14164844952d
15ba8b297a1
hex6fc23b435

30000002101 has 4 divisors (see below), whose sum is σ = 31578949600. Its totient is φ = 28421054604.

The previous prime is 30000002069. The next prime is 30000002143. The reversal of 30000002101 is 10120000003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30000002101 - 25 = 30000002069 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 (30000002801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789473721 + ... + 789473758.

It is an arithmetic number, because the mean of its divisors is an integer number (7894737400).

Almost surely, 230000002101 is an apocalyptic number.

It is an amenable number.

30000002101 is a deficient number, since it is larger than the sum of its proper divisors (1578947499).

30000002101 is a wasteful number, since it uses less digits than its factorization.

30000002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578947498.

The product of its (nonzero) digits is 6, while the sum is 7.

Adding to 30000002101 its reverse (10120000003), we get a palindrome (40120002104).

The spelling of 30000002101 in words is "thirty billion, two thousand, one hundred one".

Divisors: 1 19 1578947479 30000002101