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105814381 = 587180263
BaseRepresentation
bin1100100111010…
…01100101101101
321101002221001011
412103221211231
5204042030011
614255545221
72423256511
oct623514555
9241087034
10105814381
1154802a02
122b52b211
1318bcb17a
14100a6141
159452621
hex64e996d

105814381 has 4 divisors (see below), whose sum is σ = 105995232. Its totient is φ = 105633532.

The previous prime is 105814369. The next prime is 105814391. The reversal of 105814381 is 183418501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105814381 - 213 = 105806189 is a prime.

It is a super-2 number, since 2×1058143812 = 22393366452826322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105814351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89545 + ... + 90718.

It is an arithmetic number, because the mean of its divisors is an integer number (26498808).

Almost surely, 2105814381 is an apocalyptic number.

It is an amenable number.

105814381 is a deficient number, since it is larger than the sum of its proper divisors (180851).

105814381 is an equidigital number, since it uses as much as digits as its factorization.

105814381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180850.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 105814381 is about 10286.6117356494. The cubic root of 105814381 is about 472.9859409070.

The spelling of 105814381 in words is "one hundred five million, eight hundred fourteen thousand, three hundred eighty-one".

Divisors: 1 587 180263 105814381