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105223 = 139757
BaseRepresentation
bin11001101100000111
312100100011
4121230013
511331343
62131051
7615526
oct315407
9170304
10105223
1172068
1250a87
1338b81
142a4bd
152129d
hex19b07

105223 has 4 divisors (see below), whose sum is σ = 106120. Its totient is φ = 104328.

The previous prime is 105211. The next prime is 105227. The reversal of 105223 is 322501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 105223 - 29 = 104711 is a prime.

It is a super-2 number, since 2×1052232 = 22143759458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105227) 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, 240 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (26530).

2105223 is an apocalyptic number.

105223 is a deficient number, since it is larger than the sum of its proper divisors (897).

105223 is an equidigital number, since it uses as much as digits as its factorization.

105223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 105223 is about 324.3809488857. The cubic root of 105223 is about 47.2103144652.

Adding to 105223 its reverse (322501), we get a palindrome (427724).

The spelling of 105223 in words is "one hundred five thousand, two hundred twenty-three".

Divisors: 1 139 757 105223