105521510323 has 4 divisors (see below), whose sum is σ = 105660172728. Its totient is φ = 105382847920.

The previous prime is 105521510317. The next prime is 105521510459. The reversal of 105521510323 is 323015125501.

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

It is a cyclic number.

It is not a de Polignac number, because 105521510323 - 2²⁵ = 105487955891 is a prime.

It is a super-3 number, since 3×105521510323³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105521510291 and 105521510300.

It is not an unprimeable number, because it can be changed into a prime (105521510723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69330061 + ... + 69331582.

It is an arithmetic number, because the mean of its divisors is an integer number (26415043182).

Almost surely, 2^105521510323 is an apocalyptic number.

105521510323 is a deficient number, since it is larger than the sum of its proper divisors (138662405).

105521510323 is an equidigital number, since it uses as much as digits as its factorization.

105521510323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138662404.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 105521510323 its reverse (323015125501), we get a palindrome (428536635824).

It can be divided in two parts, 10552 and 1510323, that added together give a cube (1520875 = 115³).

The spelling of 105521510323 in words is "one hundred five billion, five hundred twenty-one million, five hundred ten thousand, three hundred twenty-three".