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12317616787 = 73156763211
BaseRepresentation
bin10110111100010111…
…11110101010010011
31011210102202202200011
423132023332222103
5200211302214122
65354133135351
7614146005130
oct133613765223
934712682604
1012317616787
115250a78893
12247918a557
131213bc0058
1484bc99587
154c15ae377
hex2de2fea93

12317616787 has 8 divisors (see below), whose sum is σ = 14531382272. Its totient is φ = 10217377800.

The previous prime is 12317616749. The next prime is 12317616797. The reversal of 12317616787 is 78761671321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12317616787 - 211 = 12317614739 is a prime.

It is a super-3 number, since 3×123176167873 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 12317616787.

It is not an unprimeable number, because it can be changed into a prime (12317616797) 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, 28381389 + ... + 28381822.

It is an arithmetic number, because the mean of its divisors is an integer number (1816422784).

Almost surely, 212317616787 is an apocalyptic number.

12317616787 is a deficient number, since it is larger than the sum of its proper divisors (2213765485).

12317616787 is an equidigital number, since it uses as much as digits as its factorization.

12317616787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56763249.

The product of its digits is 592704, while the sum is 49.

The spelling of 12317616787 in words is "twelve billion, three hundred seventeen million, six hundred sixteen thousand, seven hundred eighty-seven".

Divisors: 1 7 31 217 56763211 397342477 1759659541 12317616787