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12831108636 = 2232595141203
BaseRepresentation
bin10111111001100101…
…10010111000011100
31020010012222212001210
423330302302320130
5202234230434021
65521115104420
7632652423663
oct137462627034
936105885053
1012831108636
11549490a915
1225a1142110
1312963ba198
1489a163dda
155016dee76
hex2fccb2e1c

12831108636 has 24 divisors (see below), whose sum is σ = 29941133824. Its totient is φ = 4276767600.

The previous prime is 12831108593. The next prime is 12831108673. The reversal of 12831108636 is 63680113821.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12831108594 and 12831108603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290811 + ... + 332013.

Almost surely, 212831108636 is an apocalyptic number.

It is an amenable number.

12831108636 is an abundant number, since it is smaller than the sum of its proper divisors (17110025188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12831108636 is a wasteful number, since it uses less digits than its factorization.

12831108636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67161 (or 67159 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 12831108636 in words is "twelve billion, eight hundred thirty-one million, one hundred eight thousand, six hundred thirty-six".

Divisors: 1 2 3 4 6 12 25951 41203 51902 77853 82406 103804 123609 155706 164812 247218 311412 494436 1069259053 2138518106 3207777159 4277036212 6415554318 12831108636