312203301212 has 18 divisors (see below), whose sum is σ = 600539822064. Its totient is φ = 141910591240.

The previous prime is 312203301187. The next prime is 312203301283. The reversal of 312203301212 is 212103302213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322523588 + ... + 322524555.

It is an arithmetic number, because the mean of its divisors is an integer number (33363323448).

Almost surely, 2^312203301212 is an apocalyptic number.

It is an amenable number.

312203301212 is a deficient number, since it is larger than the sum of its proper divisors (288336520852).

312203301212 is a wasteful number, since it uses less digits than its factorization.

312203301212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645048169 (or 645048156 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312203301212 its reverse (212103302213), we get a palindrome (524306603425).

The spelling of 312203301212 in words is "three hundred twelve billion, two hundred three million, three hundred one thousand, two hundred twelve".