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105346231 = 129781223
BaseRepresentation
bin1100100011101…
…11010010110111
321100020010212021
412101313102313
5203432034411
614241534011
72416266604
oct621672267
9240203767
10105346231
1154513201
122b344307
1318a96063
14ddc36ab
1593ada71
hex64774b7

105346231 has 4 divisors (see below), whose sum is σ = 105428752. Its totient is φ = 105263712.

The previous prime is 105346217. The next prime is 105346243. The reversal of 105346231 is 132643501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-105346231 is a prime.

It is a super-2 number, since 2×1053462312 = 22195656771810722, 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 = 105346196 and 105346205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105346271) 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, 39315 + ... + 41908.

It is an arithmetic number, because the mean of its divisors is an integer number (26357188).

Almost surely, 2105346231 is an apocalyptic number.

105346231 is a deficient number, since it is larger than the sum of its proper divisors (82521).

105346231 is an equidigital number, since it uses as much as digits as its factorization.

105346231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82520.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 105346231 is about 10263.8312047695. The cubic root of 105346231 is about 472.2873725802.

Adding to 105346231 its reverse (132643501), we get a palindrome (237989732).

The spelling of 105346231 in words is "one hundred five million, three hundred forty-six thousand, two hundred thirty-one".

Divisors: 1 1297 81223 105346231