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30705175471 = 191160760081
BaseRepresentation
bin11100100110001010…
…111100101110101111
32221020220012112021011
4130212022330232233
51000341011103341
622034502250051
72134621454005
oct344612745657
987226175234
1030705175471
11120272a8883
125b4b126927
132b844c70a9
1416b3d6ca75
15bea9beb81
hex7262bcbaf

30705175471 has 4 divisors (see below), whose sum is σ = 30865935744. Its totient is φ = 30544415200.

The previous prime is 30705175463. The next prime is 30705175489. The reversal of 30705175471 is 17457150703.

30705175471 = 125842 + 125852 + ... + 127742.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30705175471 - 23 = 30705175463 is a prime.

It is a super-3 number, since 3×307051754713 (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30705175411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80379850 + ... + 80380231.

It is an arithmetic number, because the mean of its divisors is an integer number (7716483936).

Almost surely, 230705175471 is an apocalyptic number.

30705175471 is a deficient number, since it is larger than the sum of its proper divisors (160760273).

30705175471 is a wasteful number, since it uses less digits than its factorization.

30705175471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160760272.

The product of its (nonzero) digits is 102900, while the sum is 40.

The spelling of 30705175471 in words is "thirty billion, seven hundred five million, one hundred seventy-five thousand, four hundred seventy-one".

Divisors: 1 191 160760081 30705175471