Base | Representation |
---|---|
bin | 10111100110010… |
… | …101011000100111 |
3 | 1000121000002001001 |
4 | 113212111120213 |
5 | 1302324100111 |
6 | 103142014131 |
7 | 12545210245 |
oct | 2746253047 |
9 | 1017002031 |
10 | 395925031 |
11 | 193542377 |
12 | b0717347 |
13 | 64045888 |
14 | 3a823795 |
15 | 24b5b1c1 |
hex | 17995627 |
395925031 has 2 divisors, whose sum is σ = 395925032. Its totient is φ = 395925030.
The previous prime is 395925029. The next prime is 395925067. The reversal of 395925031 is 130529593.
It is a weak prime.
It is an emirp because it is prime and its reverse (130529593) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 395925031 - 21 = 395925029 is a prime.
It is a super-2 number, since 2×3959250312 = 313513260344701922, which contains 22 as substring.
Together with 395925029, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (395928031) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197962515 + 197962516.
It is an arithmetic number, because the mean of its divisors is an integer number (197962516).
Almost surely, 2395925031 is an apocalyptic number.
395925031 is a deficient number, since it is larger than the sum of its proper divisors (1).
395925031 is an equidigital number, since it uses as much as digits as its factorization.
395925031 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 36450, while the sum is 37.
The square root of 395925031 is about 19897.8649859727. The cubic root of 395925031 is about 734.2957024648.
The spelling of 395925031 in words is "three hundred ninety-five million, nine hundred twenty-five thousand, thirty-one".
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