212868312 has 32 divisors (see below), whose sum is σ = 555310080. Its totient is φ = 67870880.

The previous prime is 212868301. The next prime is 212868317. The reversal of 212868312 is 213868212.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212868317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192264 + ... + 193367.

It is an arithmetic number, because the mean of its divisors is an integer number (17353440).

Almost surely, 2^212868312 is an apocalyptic number.

It is an amenable number.

212868312 is an abundant number, since it is smaller than the sum of its proper divisors (342441768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212868312 is a wasteful number, since it uses less digits than its factorization.

212868312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385663 (or 385659 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 212868312 is about 14590.0072652484. The cubic root of 212868312 is about 597.0861610336.

The spelling of 212868312 in words is "two hundred twelve million, eight hundred sixty-eight thousand, three hundred twelve".