31331231202212 has 12 divisors (see below), whose sum is σ = 54847531917360. Its totient is φ = 15660507797256.

The previous prime is 31331231202199. The next prime is 31331231202247. The reversal of 31331231202212 is 21220213213313.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276937162 + ... + 1276961697.

It is an arithmetic number, because the mean of its divisors is an integer number (4570627659780).

Almost surely, 2^{31331231202212} is an apocalyptic number.

It is an amenable number.

31331231202212 is a deficient number, since it is larger than the sum of its proper divisors (23516300715148).

31331231202212 is a wasteful number, since it uses less digits than its factorization.

31331231202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553901930 (or 2553901928 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31331231202212 its reverse (21220213213313), we get a palindrome (52551444415525).

The spelling of 31331231202212 in words is "thirty-one trillion, three hundred thirty-one billion, two hundred thirty-one million, two hundred two thousand, two hundred twelve".