31330220330012 has 24 divisors (see below), whose sum is σ = 55445864868240. Its totient is φ = 15489408055680.

The previous prime is 31330220329963. The next prime is 31330220330027. The reversal of 31330220330012 is 21003302203313.

It is a self number, because there is not a number n which added to its sum of digits gives 31330220330012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107779937 + ... + 108070232.

It is an arithmetic number, because the mean of its divisors is an integer number (2310244369510).

Almost surely, 2^{31330220330012} is an apocalyptic number.

It is an amenable number.

31330220330012 is a deficient number, since it is larger than the sum of its proper divisors (24115644538228).

31330220330012 is a wasteful number, since it uses less digits than its factorization.

31330220330012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215850581 (or 215850579 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31330220330012 its reverse (21003302203313), we get a palindrome (52333522533325).

The spelling of 31330220330012 in words is "thirty-one trillion, three hundred thirty billion, two hundred twenty million, three hundred thirty thousand, twelve".