Base | Representation |
---|---|
bin | 1000100111011001… |
… | …0100111010000101 |
3 | 12222011210100102111 |
4 | 2021312110322011 |
5 | 14214024020010 |
6 | 1021253341021 |
7 | 111211536631 |
oct | 21166247205 |
9 | 5864710374 |
10 | 2312720005 |
11 | a87519852 |
12 | 546637771 |
13 | 2ab1a9a9b |
14 | 17d21ddc1 |
15 | d808558a |
hex | 89d94e85 |
2312720005 has 8 divisors (see below), whose sum is σ = 2842953624. Its totient is φ = 1805049600.
The previous prime is 2312719999. The next prime is 2312720009. The reversal of 2312720005 is 5000272132.
It can be written as a sum of positive squares in 4 ways, for example, as 255008961 + 2057711044 = 15969^2 + 45362^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2312720005 - 25 = 2312719973 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 (2312720009) 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, 5640576 + ... + 5640985.
It is an arithmetic number, because the mean of its divisors is an integer number (355369203).
Almost surely, 22312720005 is an apocalyptic number.
It is an amenable number.
2312720005 is a deficient number, since it is larger than the sum of its proper divisors (530233619).
2312720005 is a wasteful number, since it uses less digits than its factorization.
2312720005 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11281607.
The product of its (nonzero) digits is 840, while the sum is 22.
The square root of 2312720005 is about 48090.7476028394. The cubic root of 2312720005 is about 1322.4350531461.
Adding to 2312720005 its reverse (5000272132), we get a palindrome (7312992137).
The spelling of 2312720005 in words is "two billion, three hundred twelve million, seven hundred twenty thousand, five".
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