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23263220305 = 513536752749
BaseRepresentation
bin10101101010100110…
…001001001001010001
32020001020212000222001
4111222212021021101
5340120341022210
614404215314001
71452325052503
oct255246111121
966036760861
1023263220305
119958532806
12461297b901
132269780120
1411a9849d73
159124a603a
hex56a989251

23263220305 has 16 divisors (see below), whose sum is σ = 30630474000. Its totient is φ = 16854859008.

The previous prime is 23263220293. The next prime is 23263220317. The reversal of 23263220305 is 50302236232.

It is an interprime number because it is at equal distance from previous prime (23263220293) and next prime (23263220317).

It can be written as a sum of positive squares in 8 ways, for example, as 3538703169 + 19724517136 = 59487^2 + 140444^2 .

It is not a de Polignac number, because 23263220305 - 211 = 23263218257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3372930 + ... + 3379819.

It is an arithmetic number, because the mean of its divisors is an integer number (1914404625).

Almost surely, 223263220305 is an apocalyptic number.

It is an amenable number.

23263220305 is a deficient number, since it is larger than the sum of its proper divisors (7367253695).

23263220305 is a wasteful number, since it uses less digits than its factorization.

23263220305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6752820.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 23263220305 its reverse (50302236232), we get a palindrome (73565456537).

The spelling of 23263220305 in words is "twenty-three billion, two hundred sixty-three million, two hundred twenty thousand, three hundred five".

Divisors: 1 5 13 53 65 265 689 3445 6752749 33763745 87785737 357895697 438928685 1789478485 4652644061 23263220305