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105230431 is a prime number
BaseRepresentation
bin1100100010110…
…11000001011111
321100000021000101
412101123001133
5203414333211
614235241531
72415305155
oct621330137
9240007011
10105230431
11544441a9
122b2a92a7
1318a55437
14dd933d5
1593895c1
hex645b05f

105230431 has 2 divisors, whose sum is σ = 105230432. Its totient is φ = 105230430.

The previous prime is 105230423. The next prime is 105230443. The reversal of 105230431 is 134032501.

It is a weak prime.

It is an emirp because it is prime and its reverse (134032501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105230431 - 23 = 105230423 is a prime.

It is a super-2 number, since 2×1052304312 = 22146887216891522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105230399 and 105230408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105230831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52615215 + 52615216.

It is an arithmetic number, because the mean of its divisors is an integer number (52615216).

Almost surely, 2105230431 is an apocalyptic number.

105230431 is a deficient number, since it is larger than the sum of its proper divisors (1).

105230431 is an equidigital number, since it uses as much as digits as its factorization.

105230431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 105230431 is about 10258.1884853029. The cubic root of 105230431 is about 472.1142579252.

Adding to 105230431 its reverse (134032501), we get a palindrome (239262932).

The spelling of 105230431 in words is "one hundred five million, two hundred thirty thousand, four hundred thirty-one".