312331313223212 has 12 divisors (see below), whose sum is σ = 554067192636216. Its totient is φ = 154026401041440.

The previous prime is 312331313223199. The next prime is 312331313223247. The reversal of 312331313223212 is 212322313133213.

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, 534813892214 + ... + 534813892797.

It is an arithmetic number, because the mean of its divisors is an integer number (46172266053018).

Almost surely, 2^{312331313223212} is an apocalyptic number.

It is an amenable number.

312331313223212 is a deficient number, since it is larger than the sum of its proper divisors (241735879413004).

312331313223212 is a wasteful number, since it uses less digits than its factorization.

312331313223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069627785088 (or 1069627785086 counting only the distinct ones).

The product of its digits is 23328, while the sum is 32.

Adding to 312331313223212 its reverse (212322313133213), we get a palindrome (524653626356425).

The spelling of 312331313223212 in words is "three hundred twelve trillion, three hundred thirty-one billion, three hundred thirteen million, two hundred twenty-three thousand, two hundred twelve".