105130345 has 4 divisors (see below), whose sum is σ = 126156420. Its totient is φ = 84104272.

The previous prime is 105130343. The next prime is 105130351. The reversal of 105130345 is 543031501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543031501 = 71 ⋅7648331.

It can be written as a sum of positive squares in 2 ways, for example, as 82955664 + 22174681 = 9108^2 + 4709^2 .

It is a cyclic number.

It is not a de Polignac number, because 105130345 - 2¹ = 105130343 is a prime.

It is a super-2 number, since 2×105130345² = 22104778879638050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105130343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10513030 + ... + 10513039.

It is an arithmetic number, because the mean of its divisors is an integer number (31539105).

Almost surely, 2^105130345 is an apocalyptic number.

It is an amenable number.

105130345 is a deficient number, since it is larger than the sum of its proper divisors (21026075).

105130345 is an equidigital number, since it uses as much as digits as its factorization.

105130345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21026074.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 105130345 is about 10253.3089780812. The cubic root of 105130345 is about 471.9645324901.

Adding to 105130345 its reverse (543031501), we get a palindrome (648161846).

The spelling of 105130345 in words is "one hundred five million, one hundred thirty thousand, three hundred forty-five".