3213213669 has 12 divisors (see below), whose sum is σ = 4728881196. Its totient is φ = 2101724352.

The previous prime is 3213213649. The next prime is 3213213721. The reversal of 3213213669 is 9663123123.

It is a happy number.

3213213669 is a `hidden beast` number, since 321 + 321 + 3 + 6 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1021569444 + 2191644225 = 31962^2 + 46815^2 .

It is not a de Polignac number, because 3213213669 - 2⁵ = 3213213637 is a prime.

It is a super-2 number, since 2×3213213669² = 20649484165296883122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213213649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3367672 + ... + 3368625.

It is an arithmetic number, because the mean of its divisors is an integer number (394073433).

Almost surely, 2^3213213669 is an apocalyptic number.

It is an amenable number.

3213213669 is a deficient number, since it is larger than the sum of its proper divisors (1515667527).

3213213669 is a wasteful number, since it uses less digits than its factorization.

3213213669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736356 (or 6736353 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 3213213669 is about 56685.2156121859. The cubic root of 3213213669 is about 1475.6381295549.

The spelling of 3213213669 in words is "three billion, two hundred thirteen million, two hundred thirteen thousand, six hundred sixty-nine".