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105268381 is a prime number
BaseRepresentation
bin1100100011001…
…00010010011101
321100002012001221
412101210102131
5203422042011
614240133341
72415523621
oct621442235
9240065057
10105268381
115446a769
122b307251
1318a697aa
14dda3181
159395971
hex646449d

105268381 has 2 divisors, whose sum is σ = 105268382. Its totient is φ = 105268380.

The previous prime is 105268337. The next prime is 105268451. The reversal of 105268381 is 183862501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79816356 + 25452025 = 8934^2 + 5045^2 .

It is an emirp because it is prime and its reverse (183862501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105268381 - 27 = 105268253 is a prime.

It is a super-2 number, since 2×1052683812 = 22162864076722322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105268081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52634190 + 52634191.

It is an arithmetic number, because the mean of its divisors is an integer number (52634191).

Almost surely, 2105268381 is an apocalyptic number.

It is an amenable number.

105268381 is a deficient number, since it is larger than the sum of its proper divisors (1).

105268381 is an equidigital number, since it uses as much as digits as its factorization.

105268381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 105268381 is about 10260.0380603583. The cubic root of 105268381 is about 472.1710050801.

The spelling of 105268381 in words is "one hundred five million, two hundred sixty-eight thousand, three hundred eighty-one".