3218563212 has 12 divisors (see below), whose sum is σ = 7509980856. Its totient is φ = 1072854400.

The previous prime is 3218563193. The next prime is 3218563223. The reversal of 3218563212 is 2123658123.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134106789 + ... + 134106812.

It is an arithmetic number, because the mean of its divisors is an integer number (625831738).

Almost surely, 2^3218563212 is an apocalyptic number.

It is an amenable number.

3218563212 is an abundant number, since it is smaller than the sum of its proper divisors (4291417644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3218563212 is a wasteful number, since it uses less digits than its factorization.

3218563212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268213608 (or 268213606 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 3218563212 is about 56732.3823931271. The cubic root of 3218563212 is about 1476.4565846072.

The spelling of 3218563212 in words is "three billion, two hundred eighteen million, five hundred sixty-three thousand, two hundred twelve".