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105423023 = 731917561
BaseRepresentation
bin1100100100010…
…10000010101111
321100101001012102
412102022002233
5203442014043
614243325315
72420036516
oct622120257
9240331172
10105423023
1154565972
122b38083b
1318ac1cb4
141000367d
1593c66b8
hex648a0af

105423023 has 8 divisors (see below), whose sum is σ = 107440896. Its totient is φ = 103420800.

The previous prime is 105422987. The next prime is 105423037. The reversal of 105423023 is 320324501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105423023 - 210 = 105421999 is a prime.

It is a super-2 number, since 2×1054230232 = 22228027556917058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105422986 and 105423004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105423223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10163 + ... + 17723.

It is an arithmetic number, because the mean of its divisors is an integer number (13430112).

Almost surely, 2105423023 is an apocalyptic number.

105423023 is a deficient number, since it is larger than the sum of its proper divisors (2017873).

105423023 is an equidigital number, since it uses as much as digits as its factorization.

105423023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7825.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 105423023 is about 10267.5714265838. The cubic root of 105423023 is about 472.4021024655.

Adding to 105423023 its reverse (320324501), we get a palindrome (425747524).

It can be divided in two parts, 1054 and 23023, that multiplied together give a palindrome (24266242).

The spelling of 105423023 in words is "one hundred five million, four hundred twenty-three thousand, twenty-three".

Divisors: 1 73 191 7561 13943 551953 1444151 105423023