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12568131 = 324393181
BaseRepresentation
bin101111111100…
…011001000011
3212122112020100
4233330121003
511204140011
61125213443
7211553532
oct57743103
925575210
1012568131
117104694
124261283
1327b0784
141952319
151183d56
hexbfc643

12568131 has 12 divisors (see below), whose sum is σ = 18201040. Its totient is φ = 8357040.

The previous prime is 12568111. The next prime is 12568133. The reversal of 12568131 is 13186521.

It is not a de Polignac number, because 12568131 - 218 = 12305987 is a prime.

It is a super-2 number, since 2×125681312 = 315915833666322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12568095 and 12568104.

It is not an unprimeable number, because it can be changed into a prime (12568133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2361 + ... + 5541.

Almost surely, 212568131 is an apocalyptic number.

12568131 is a deficient number, since it is larger than the sum of its proper divisors (5632909).

12568131 is a wasteful number, since it uses less digits than its factorization.

12568131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626 (or 3623 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 12568131 is about 3545.1559909262. The cubic root of 12568131 is about 232.5003260488.

The spelling of 12568131 in words is "twelve million, five hundred sixty-eight thousand, one hundred thirty-one".

Divisors: 1 3 9 439 1317 3181 3951 9543 28629 1396459 4189377 12568131