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12868428131 = 134241233407
BaseRepresentation
bin10111111110000010…
…01010000101100011
31020012211012212210022
423333001022011203
5202323304200011
65524531024055
7633614556116
oct137701120543
936184185708
1012868428131
11550398a579
1225b173b02b
1312a1055920
148a10ba57d
15504b128db
hex2ff04a163

12868428131 has 8 divisors (see below), whose sum is σ = 13861634304. Its totient is φ = 11875697280.

The previous prime is 12868428127. The next prime is 12868428169. The reversal of 12868428131 is 13182486821.

12868428131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12868428131 - 22 = 12868428127 is a prime.

It is a super-2 number, since 2×128684281312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12868428931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61571 + ... + 171836.

It is an arithmetic number, because the mean of its divisors is an integer number (1732704288).

Almost surely, 212868428131 is an apocalyptic number.

12868428131 is a deficient number, since it is larger than the sum of its proper divisors (993206173).

12868428131 is a wasteful number, since it uses less digits than its factorization.

12868428131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237661.

The product of its digits is 147456, while the sum is 44.

The spelling of 12868428131 in words is "twelve billion, eight hundred sixty-eight million, four hundred twenty-eight thousand, one hundred thirty-one".

Divisors: 1 13 4241 55133 233407 3034291 989879087 12868428131