31212103123210 has 32 divisors (see below), whose sum is σ = 56304036883584. Its totient is φ = 12457699320000.

The previous prime is 31212103123153. The next prime is 31212103123231. The reversal of 31212103123210 is 1232130121213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8425185 + ... + 11550235.

It is an arithmetic number, because the mean of its divisors is an integer number (1759501152612).

Almost surely, 2^{31212103123210} is an apocalyptic number.

31212103123210 is a deficient number, since it is larger than the sum of its proper divisors (25091933760374).

31212103123210 is a wasteful number, since it uses less digits than its factorization.

31212103123210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127230.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31212103123210 its reverse (1232130121213), we get a palindrome (32444233244423).

The spelling of 31212103123210 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred twenty-three thousand, two hundred ten".