312211313223112 has 64 divisors (see below), whose sum is σ = 615546540259200. Its totient is φ = 148170107205120.

The previous prime is 312211313223091. The next prime is 312211313223119. The reversal of 312211313223112 is 211322313112213.

It is not an unprimeable number, because it can be changed into a prime (312211313223119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429579964 + ... + 430306132.

It is an arithmetic number, because the mean of its divisors is an integer number (9617914691550).

Almost surely, 2^{312211313223112} is an apocalyptic number.

It is an amenable number.

312211313223112 is a deficient number, since it is larger than the sum of its proper divisors (303335227036088).

312211313223112 is a wasteful number, since it uses less digits than its factorization.

312211313223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744166 (or 744162 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

Adding to 312211313223112 its reverse (211322313112213), we get a palindrome (523533626335325).

The spelling of 312211313223112 in words is "three hundred twelve trillion, two hundred eleven billion, three hundred thirteen million, two hundred twenty-three thousand, one hundred twelve".