Base | Representation |
---|---|
bin | 111001001010… |
… | …111101111011 |
3 | 1001012102110221 |
4 | 321022331323 |
5 | 12314042011 |
6 | 1253120511 |
7 | 241250155 |
oct | 71127573 |
9 | 31172427 |
10 | 14987131 |
11 | 8507065 |
12 | 5029137 |
13 | 3149833 |
14 | 1dc1ad5 |
15 | 14b0971 |
hex | e4af7b |
14987131 has 2 divisors, whose sum is σ = 14987132. Its totient is φ = 14987130.
The previous prime is 14987129. The next prime is 14987153. The reversal of 14987131 is 13178941.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 14987131 - 21 = 14987129 is a prime.
It is a super-2 number, since 2×149871312 = 449228191222322, which contains 22 as substring.
Together with 14987129, it forms a pair of twin primes.
It is equal to p969910 and since 14987131 and 969910 have the same sum of digits, it is a Honaker prime.
It is not a weakly prime, because it can be changed into another prime (14987101) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7493565 + 7493566.
It is an arithmetic number, because the mean of its divisors is an integer number (7493566).
Almost surely, 214987131 is an apocalyptic number.
14987131 is a deficient number, since it is larger than the sum of its proper divisors (1).
14987131 is an equidigital number, since it uses as much as digits as its factorization.
14987131 is an evil number, because the sum of its binary digits is even.
The product of its digits is 6048, while the sum is 34.
The square root of 14987131 is about 3871.3216089599. The cubic root of 14987131 is about 246.5506590691.
The spelling of 14987131 in words is "fourteen million, nine hundred eighty-seven thousand, one hundred thirty-one".
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