312197212 has 6 divisors (see below), whose sum is σ = 546345128. Its totient is φ = 156098604.

The previous prime is 312197183. The next prime is 312197219. The reversal of 312197212 is 212791213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312197219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39024648 + ... + 39024655.

Almost surely, 2^312197212 is an apocalyptic number.

It is an amenable number.

312197212 is a deficient number, since it is larger than the sum of its proper divisors (234147916).

312197212 is a wasteful number, since it uses less digits than its factorization.

312197212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78049307 (or 78049305 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 312197212 is about 17669.1033162410. The cubic root of 312197212 is about 678.3851618356.

The spelling of 312197212 in words is "three hundred twelve million, one hundred ninety-seven thousand, two hundred twelve".