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30230509205 = 513465084757
BaseRepresentation
bin11100001001111000…
…001111011010010101
32220000211000222120002
4130021320033122111
5443403002243310
621515424421045
72120066042231
oct341170173225
986024028502
1030230509205
1111903375006
125a38177785
132b0a072090
14166accd5c1
15bbdeacda5
hex709e0f695

30230509205 has 8 divisors (see below), whose sum is σ = 39067119672. Its totient is φ = 22324068288.

The previous prime is 30230509201. The next prime is 30230509207. The reversal of 30230509205 is 50290503203.

It can be written as a sum of positive squares in 4 ways, for example, as 1594085476 + 28636423729 = 39926^2 + 169223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30230509205 - 22 = 30230509201 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 (30230509201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232542314 + ... + 232542443.

It is an arithmetic number, because the mean of its divisors is an integer number (4883389959).

Almost surely, 230230509205 is an apocalyptic number.

It is an amenable number.

30230509205 is a deficient number, since it is larger than the sum of its proper divisors (8836610467).

30230509205 is a wasteful number, since it uses less digits than its factorization.

30230509205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465084775.

The product of its (nonzero) digits is 8100, while the sum is 29.

The spelling of 30230509205 in words is "thirty billion, two hundred thirty million, five hundred nine thousand, two hundred five".

Divisors: 1 5 13 65 465084757 2325423785 6046101841 30230509205