31212103133330 has 64 divisors (see below), whose sum is σ = 65848801761792. Its totient is φ = 10428379983360.

The previous prime is 31212103133297. The next prime is 31212103133359. The reversal of 31212103133330 is 3333130121213.

It is a self number, because there is not a number n which added to its sum of digits gives 31212103133330.

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 31 ways as a sum of consecutive naturals, for example, 3683294 + ... + 8717273.

It is an arithmetic number, because the mean of its divisors is an integer number (1028887527528).

Almost surely, 2^{31212103133330} is an apocalyptic number.

31212103133330 is an abundant number, since it is smaller than the sum of its proper divisors (34636698628462).

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

31212103133330 is a wasteful number, since it uses less digits than its factorization.

31212103133330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12401499.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31212103133330 its reverse (3333130121213), we get a palindrome (34545233254543).

The spelling of 31212103133330 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred thirty-three thousand, three hundred thirty".