312213131312 has 10 divisors (see below), whose sum is σ = 604912941948. Its totient is φ = 156106565648.

The previous prime is 312213131309. The next prime is 312213131317. The reversal of 312213131312 is 213131312213.

It is not an unprimeable number, because it can be changed into a prime (312213131317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9756660338 + ... + 9756660369.

Almost surely, 2^312213131312 is an apocalyptic number.

It is an amenable number.

312213131312 is a deficient number, since it is larger than the sum of its proper divisors (292699810636).

312213131312 is a wasteful number, since it uses less digits than its factorization.

312213131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19513320715 (or 19513320709 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 312213131312 its reverse (213131312213), we get a palindrome (525344443525).

The spelling of 312213131312 in words is "three hundred twelve billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred twelve".