2105323265 has 16 divisors (see below), whose sum is σ = 2684686032. Its totient is φ = 1579444224.

The previous prime is 2105323261. The next prime is 2105323279. The reversal of 2105323265 is 5623235012.

It can be written as a sum of positive squares in 8 ways, for example, as 157954624 + 1947368641 = 12568^2 + 44129^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105323265 - 2² = 2105323261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105323261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21164 + ... + 68253.

It is an arithmetic number, because the mean of its divisors is an integer number (167792877).

Almost surely, 2^2105323265 is an apocalyptic number.

It is an amenable number.

2105323265 is a deficient number, since it is larger than the sum of its proper divisors (579362767).

2105323265 is a wasteful number, since it uses less digits than its factorization.

2105323265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89716.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 2105323265 is about 45883.8017714313. The cubic root of 2105323265 is about 1281.6602936148.

Adding to 2105323265 its reverse (5623235012), we get a palindrome (7728558277).

The spelling of 2105323265 in words is "two billion, one hundred five million, three hundred twenty-three thousand, two hundred sixty-five".