3131212 has 12 divisors (see below), whose sum is σ = 6262480. Its totient is φ = 1341936.

The previous prime is 3131209. The next prime is 3131221. The reversal of 3131212 is 2121313.

3131212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

3131212 is an admirable number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3131192 and 3131201.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 55887 + ... + 55942.

Almost surely, 2^3131212 is an apocalyptic number.

It is an amenable number.

3131212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3131212 is a wasteful number, since it uses less digits than its factorization.

3131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111840 (or 111838 counting only the distinct ones).

The product of its digits is 36, while the sum is 13.

The square root of 3131212 is about 1769.5230995949. The cubic root of 3131212 is about 146.2976974480.

Adding to 3131212 its reverse (2121313), we get a palindrome (5252525).

The spelling of 3131212 in words is "three million, one hundred thirty-one thousand, two hundred twelve".