Base | Representation |
---|---|
bin | 110101001110… |
… | …010011100111 |
3 | 222020211212022 |
4 | 311032103213 |
5 | 12032432411 |
6 | 1215013355 |
7 | 226410026 |
oct | 65162347 |
9 | 28224768 |
10 | 13952231 |
11 | 796a577 |
12 | 480a25b |
13 | 2b76777 |
14 | 1bd28bd |
15 | 1358edb |
hex | d4e4e7 |
13952231 has 2 divisors, whose sum is σ = 13952232. Its totient is φ = 13952230.
The previous prime is 13952179. The next prime is 13952287. The reversal of 13952231 is 13225931.
It is a weak prime.
It is an emirp because it is prime and its reverse (13225931) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 13952231 - 210 = 13951207 is a prime.
It is a super-2 number, since 2×139522312 = 389329499754722, which contains 22 as substring.
It is a Chen prime.
It is equal to p907226 and since 13952231 and 907226 have the same sum of digits, it is a Honaker prime.
It is a self number, because there is not a number n which added to its sum of digits gives 13952231.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13952531) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6976115 + 6976116.
It is an arithmetic number, because the mean of its divisors is an integer number (6976116).
Almost surely, 213952231 is an apocalyptic number.
13952231 is a deficient number, since it is larger than the sum of its proper divisors (1).
13952231 is an equidigital number, since it uses as much as digits as its factorization.
13952231 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1620, while the sum is 26.
The square root of 13952231 is about 3735.2685311768. The cubic root of 13952231 is about 240.7397948017.
The spelling of 13952231 in words is "thirteen million, nine hundred fifty-two thousand, two hundred thirty-one".
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