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2307131161 = 18112746581
BaseRepresentation
bin1000100110000100…
…0000011100011001
312221210021101222021
42021201000130121
514211111144121
61020533454441
7111113201626
oct21141003431
95853241867
102307131161
11a84351875
125447a1421
132a9ca0c8a
1417c5a734d
15d782e641
hex89840719

2307131161 has 4 divisors (see below), whose sum is σ = 2319877924. Its totient is φ = 2294384400.

The previous prime is 2307131119. The next prime is 2307131191. The reversal of 2307131161 is 1611317032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1248279561 + 1058851600 = 35331^2 + 32540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2307131161 - 27 = 2307131033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2307131191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6373110 + ... + 6373471.

It is an arithmetic number, because the mean of its divisors is an integer number (579969481).

Almost surely, 22307131161 is an apocalyptic number.

It is an amenable number.

2307131161 is a deficient number, since it is larger than the sum of its proper divisors (12746763).

2307131161 is a wasteful number, since it uses less digits than its factorization.

2307131161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12746762.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 2307131161 is about 48032.6051864772. The cubic root of 2307131161 is about 1321.3689427185.

Adding to 2307131161 its reverse (1611317032), we get a palindrome (3918448193).

The spelling of 2307131161 in words is "two billion, three hundred seven million, one hundred thirty-one thousand, one hundred sixty-one".

Divisors: 1 181 12746581 2307131161