Base | Representation |
---|---|
bin | 10111101011100110… |
… | …10101011000010111 |
3 | 1012211001021102210210 |
4 | 23311303111120113 |
5 | 202014213400211 |
6 | 5501325020503 |
7 | 630026411541 |
oct | 136563253027 |
9 | 35731242723 |
10 | 12713809431 |
11 | 5434683224 |
12 | 25699b4733 |
13 | 1277cca67b |
14 | 88874c691 |
15 | 4e626e9a6 |
hex | 2f5cd5617 |
12713809431 has 16 divisors (see below), whose sum is σ = 18033988608. Its totient is φ = 7939478400.
The previous prime is 12713809411. The next prime is 12713809457. The reversal of 12713809431 is 13490831721.
It is not a de Polignac number, because 12713809431 - 213 = 12713801239 is a prime.
It is a super-2 number, since 2×127138094312 (a number of 21 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 12713809431.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12713809411) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579975 + ... + 601496.
It is an arithmetic number, because the mean of its divisors is an integer number (1127124288).
Almost surely, 212713809431 is an apocalyptic number.
12713809431 is a deficient number, since it is larger than the sum of its proper divisors (5320179177).
12713809431 is a wasteful number, since it uses less digits than its factorization.
12713809431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1181702.
The product of its (nonzero) digits is 36288, while the sum is 39.
The spelling of 12713809431 in words is "twelve billion, seven hundred thirteen million, eight hundred nine thousand, four hundred thirty-one".
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