312203212 has 24 divisors (see below), whose sum is σ = 594946800. Its totient is φ = 142785216.

The previous prime is 312203207. The next prime is 312203267. The reversal of 312203212 is 212302213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68623 + ... + 73030.

It is an arithmetic number, because the mean of its divisors is an integer number (24789450).

Almost surely, 2^312203212 is an apocalyptic number.

It is an amenable number.

312203212 is a deficient number, since it is larger than the sum of its proper divisors (282743588).

312203212 is a wasteful number, since it uses less digits than its factorization.

312203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141705 (or 141703 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 312203212 is about 17669.2731033283. The cubic root of 312203212 is about 678.3895076836.

Adding to 312203212 its reverse (212302213), we get a palindrome (524505425).

Subtracting from 312203212 its reverse (212302213), we obtain a palindrome (99900999).

The spelling of 312203212 in words is "three hundred twelve million, two hundred three thousand, two hundred twelve".