31332012212 has 6 divisors (see below), whose sum is σ = 54831021378. Its totient is φ = 15666006104.

The previous prime is 31332012193. The next prime is 31332012253. The reversal of 31332012212 is 21221023313.

It can be written as a sum of positive squares in only one way, i.e., 24134865316 + 7197146896 = 155354^2 + 84836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3916501523 + ... + 3916501530.

It is an arithmetic number, because the mean of its divisors is an integer number (9138503563).

Almost surely, 2^31332012212 is an apocalyptic number.

It is an amenable number.

31332012212 is a deficient number, since it is larger than the sum of its proper divisors (23499009166).

31332012212 is a wasteful number, since it uses less digits than its factorization.

31332012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7833003057 (or 7833003055 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31332012212 its reverse (21221023313), we get a palindrome (52553035525).

The spelling of 31332012212 in words is "thirty-one billion, three hundred thirty-two million, twelve thousand, two hundred twelve".