3213100305 has 28 divisors (see below), whose sum is σ = 5780942580. Its totient is φ = 1713651552.

The previous prime is 3213100301. The next prime is 3213100321. The reversal of 3213100305 is 5030013123.

3213100305 is a `hidden beast` number, since 321 + 310 + 0 + 30 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1402427601 + 1810672704 = 37449^2 + 42552^2 .

It is not a de Polignac number, because 3213100305 - 2² = 3213100301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3213100301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 437110 + ... + 444399.

It is an arithmetic number, because the mean of its divisors is an integer number (206462235).

Almost surely, 2^3213100305 is an apocalyptic number.

It is an amenable number.

3213100305 is a deficient number, since it is larger than the sum of its proper divisors (2567842275).

3213100305 is an frugal number, since it uses more digits than its factorization.

3213100305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881532 (or 881517 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 3213100305 is about 56684.2156600936. The cubic root of 3213100305 is about 1475.6207755676.

Adding to 3213100305 its reverse (5030013123), we get a palindrome (8243113428).

The spelling of 3213100305 in words is "three billion, two hundred thirteen million, one hundred thousand, three hundred five".