3205505331 has 24 divisors (see below), whose sum is σ = 5521701120. Its totient is φ = 1752076656.

The previous prime is 3205505311. The next prime is 3205505357. The reversal of 3205505331 is 1335055023.

3205505331 is a `hidden beast` number, since 32 + 0 + 550 + 53 + 31 = 666.

It is not a de Polignac number, because 3205505331 - 2⁷ = 3205505203 is a prime.

It is a super-2 number, since 2×3205505331² = 20550528854138839122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3205505295 and 3205505304.

It is not an unprimeable number, because it can be changed into a prime (3205505311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1104661 + ... + 1107558.

It is an arithmetic number, because the mean of its divisors is an integer number (230070880).

Almost surely, 2^3205505331 is an apocalyptic number.

3205505331 is a deficient number, since it is larger than the sum of its proper divisors (2316195789).

3205505331 is a wasteful number, since it uses less digits than its factorization.

3205505331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212255 (or 2212252 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 27.

The square root of 3205505331 is about 56617.1822947769. The cubic root of 3205505331 is about 1474.4571908256.

It can be divided in two parts, 3205 and 505331, that added together give a triangular number (508536 = T₁₀₀₈).

The spelling of 3205505331 in words is "three billion, two hundred five million, five hundred five thousand, three hundred thirty-one".