231110312123212 has 12 divisors (see below), whose sum is σ = 404481320449360. Its totient is φ = 115544220566256.

The previous prime is 231110312123189. The next prime is 231110312123233. The reversal of 231110312123212 is 212321213011132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2733826287 + ... + 2733910822.

Almost surely, 2^{231110312123212} is an apocalyptic number.

It is an amenable number.

231110312123212 is a deficient number, since it is larger than the sum of its proper divisors (173371008326148).

231110312123212 is a wasteful number, since it uses less digits than its factorization.

231110312123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5467747680 (or 5467747678 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 231110312123212 its reverse (212321213011132), we get a palindrome (443431525134344).

The spelling of 231110312123212 in words is "two hundred thirty-one trillion, one hundred ten billion, three hundred twelve million, one hundred twenty-three thousand, two hundred twelve".