Search a number
-
+
395925031 is a prime number
BaseRepresentation
bin10111100110010…
…101011000100111
31000121000002001001
4113212111120213
51302324100111
6103142014131
712545210245
oct2746253047
91017002031
10395925031
11193542377
12b0717347
1364045888
143a823795
1524b5b1c1
hex17995627

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".