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23144311105 = 517272286013
BaseRepresentation
bin10101100011100000…
…100010100101000001
32012201222002211012121
4111203200202211001
5334344420423410
614344330524241
71446352253446
oct254340424501
965658084177
1023144311105
1198a73a6543
12459ab96681
13224ac48856
141197b359cd
15906d189da
hex563822941

23144311105 has 8 divisors (see below), whose sum is σ = 29406889512. Its totient is φ = 17426304768.

The previous prime is 23144311019. The next prime is 23144311117. The reversal of 23144311105 is 50111344132.

It can be written as a sum of positive squares in 4 ways, for example, as 830822976 + 22313488129 = 28824^2 + 149377^2 .

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 23144311105 - 211 = 23144309057 is a prime.

It is a super-3 number, since 3×231443111053 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23144311105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136142922 + ... + 136143091.

It is an arithmetic number, because the mean of its divisors is an integer number (3675861189).

Almost surely, 223144311105 is an apocalyptic number.

It is an amenable number.

23144311105 is a deficient number, since it is larger than the sum of its proper divisors (6262578407).

23144311105 is a wasteful number, since it uses less digits than its factorization.

23144311105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272286035.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 23144311105 its reverse (50111344132), we get a palindrome (73255655237).

The spelling of 23144311105 in words is "twenty-three billion, one hundred forty-four million, three hundred eleven thousand, one hundred five".

Divisors: 1 5 17 85 272286013 1361430065 4628862221 23144311105