212442312 has 16 divisors (see below), whose sum is σ = 531105840. Its totient is φ = 70814096.

The previous prime is 212442311. The next prime is 212442323. The reversal of 212442312 is 213244212.

212442312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (212442311) 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 in 3 ways as a sum of consecutive naturals, for example, 4425858 + ... + 4425905.

It is an arithmetic number, because the mean of its divisors is an integer number (33194115).

Almost surely, 2^212442312 is an apocalyptic number.

It is an amenable number.

212442312 is an abundant number, since it is smaller than the sum of its proper divisors (318663528).

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

212442312 is a wasteful number, since it uses less digits than its factorization.

212442312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8851772 (or 8851768 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 212442312 is about 14575.4009207294. The cubic root of 212442312 is about 596.6875913444.

Adding to 212442312 its reverse (213244212), we get a palindrome (425686524).

The spelling of 212442312 in words is "two hundred twelve million, four hundred forty-two thousand, three hundred twelve".