3213131212 has 48 divisors (see below), whose sum is σ = 5904360000. Its totient is φ = 1528015104.

The previous prime is 3213131203. The next prime is 3213131237. The reversal of 3213131212 is 2121313123.

It is a self number, because there is not a number n which added to its sum of digits gives 3213131212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2515518 + ... + 2516794.

It is an arithmetic number, because the mean of its divisors is an integer number (123007500).

Almost surely, 2^3213131212 is an apocalyptic number.

It is an amenable number.

3213131212 is a deficient number, since it is larger than the sum of its proper divisors (2691228788).

3213131212 is a wasteful number, since it uses less digits than its factorization.

3213131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618 (or 1616 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 3213131212 is about 56684.4882838330. The cubic root of 3213131212 is about 1475.6255069133.

Adding to 3213131212 its reverse (2121313123), we get a palindrome (5334444335).

It can be divided in two parts, 321313121 and 2, that added together give a palindrome (321313123).

The spelling of 3213131212 in words is "three billion, two hundred thirteen million, one hundred thirty-one thousand, two hundred twelve".