105686281 has 2 divisors, whose sum is σ = 105686282. Its totient is φ = 105686280.

The previous prime is 105686267. The next prime is 105686327. The reversal of 105686281 is 182686501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82646281 + 23040000 = 9091^2 + 4800^2 .

It is a cyclic number.

It is not a de Polignac number, because 105686281 - 2⁵ = 105686249 is a prime.

It is a super-2 number, since 2×105686281² = 22339179983221922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105686281.

It is not a weakly prime, because it can be changed into another prime (105686381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52843140 + 52843141.

It is an arithmetic number, because the mean of its divisors is an integer number (52843141).

Almost surely, 2^105686281 is an apocalyptic number.

It is an amenable number.

105686281 is a deficient number, since it is larger than the sum of its proper divisors (1).

105686281 is an equidigital number, since it uses as much as digits as its factorization.

105686281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 105686281 is about 10280.3833099744. The cubic root of 105686281 is about 472.7949965854.

The spelling of 105686281 in words is "one hundred five million, six hundred eighty-six thousand, two hundred eighty-one".