31212103200203 has 12 divisors (see below), whose sum is σ = 32557768333200. Its totient is φ = 29911028159376.

The previous prime is 31212103200199. The next prime is 31212103200211. The reversal of 31212103200203 is 30200230121213.

It is not a de Polignac number, because 31212103200203 - 2² = 31212103200199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31212103200293) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 159152303 + ... + 159348296.

It is an arithmetic number, because the mean of its divisors is an integer number (2713147361100).

Almost surely, 2^{31212103200203} is an apocalyptic number.

31212103200203 is a deficient number, since it is larger than the sum of its proper divisors (1345665132997).

31212103200203 is an equidigital number, since it uses as much as digits as its factorization.

31212103200203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318500738 (or 318500695 counting only the distinct ones).

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

Adding to 31212103200203 its reverse (30200230121213), we get a palindrome (61412333321416).

The spelling of 31212103200203 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, two hundred thousand, two hundred three".