3205105069 has 2 divisors, whose sum is σ = 3205105070. Its totient is φ = 3205105068.

The previous prime is 3205105051. The next prime is 3205105133. The reversal of 3205105069 is 9605015023.

3205105069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2121707844 + 1083397225 = 46062^2 + 32915^2 .

It is a cyclic number.

It is not a de Polignac number, because 3205105069 - 2⁷ = 3205104941 is a prime.

It is a super-2 number, since 2×3205105069² = 20545397006658989522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3205105069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3205105049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1602552534 + 1602552535.

It is an arithmetic number, because the mean of its divisors is an integer number (1602552535).

Almost surely, 2^3205105069 is an apocalyptic number.

It is an amenable number.

3205105069 is a deficient number, since it is larger than the sum of its proper divisors (1).

3205105069 is an equidigital number, since it uses as much as digits as its factorization.

3205105069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 3205105069 is about 56613.6473741094. The cubic root of 3205105069 is about 1474.3958178970.

The spelling of 3205105069 in words is "three billion, two hundred five million, one hundred five thousand, sixty-nine".