212312104 has 16 divisors (see below), whose sum is σ = 407795220. Its totient is φ = 103566720.

The previous prime is 212312101. The next prime is 212312119. The reversal of 212312104 is 401213212.

It can be written as a sum of positive squares in 2 ways, for example, as 186322500 + 25989604 = 13650^2 + 5098^2 .

It is a super-3 number, since 3×212312104³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (212312101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323319 + ... + 323974.

Almost surely, 2^212312104 is an apocalyptic number.

It is an amenable number.

212312104 is a deficient number, since it is larger than the sum of its proper divisors (195483116).

212312104 is a wasteful number, since it uses less digits than its factorization.

212312104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647340 (or 647336 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 212312104 is about 14570.9335322072. The cubic root of 212312104 is about 596.5656611827.

Adding to 212312104 its reverse (401213212), we get a palindrome (613525316).

The spelling of 212312104 in words is "two hundred twelve million, three hundred twelve thousand, one hundred four".