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105231469 = 722777753
BaseRepresentation
bin1100100010110…
…11010001101101
321100000022102211
412101123101231
5203414401334
614235250421
72415311200
oct621332155
9240008384
10105231469
1154444a62
122b2a9a11
1318a55a55
14dd93937
159389a64
hex645b46d

105231469 has 12 divisors (see below), whose sum is σ = 122869884. Its totient is φ = 89861184.

The previous prime is 105231457. The next prime is 105231487. The reversal of 105231469 is 964132501.

It can be written as a sum of positive squares in 2 ways, for example, as 71149225 + 34082244 = 8435^2 + 5838^2 .

It is not a de Polignac number, because 105231469 - 25 = 105231437 is a prime.

It is a super-2 number, since 2×1052314692 = 22147324135795922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105231469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105231419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9697 + ... + 17449.

It is an arithmetic number, because the mean of its divisors is an integer number (10239157).

Almost surely, 2105231469 is an apocalyptic number.

It is an amenable number.

105231469 is a deficient number, since it is larger than the sum of its proper divisors (17638415).

105231469 is an equidigital number, since it uses as much as digits as its factorization.

105231469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8044 (or 8037 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 105231469 is about 10258.2390789063. The cubic root of 105231469 is about 472.1158102423.

The spelling of 105231469 in words is "one hundred five million, two hundred thirty-one thousand, four hundred sixty-nine".

Divisors: 1 7 49 277 1939 7753 13573 54271 379897 2147581 15033067 105231469