212312 has 8 divisors (see below), whose sum is σ = 398100. Its totient is φ = 106152.
The previous prime is 212297. The next prime is 212353. The reversal of 212312 is 213212.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (8).
It is a junction number, because it is equal to n+sod(n) for n = 212293 and 212302.
It is a congruent number.
It is an unprimeable number.
212312 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13262 + ... + 13277.
2212312 is an apocalyptic number.
It is an amenable number.
212312 is a deficient number, since it is larger than the sum of its proper divisors (185788).
212312 is a wasteful number, since it uses less digits than its factorization.
212312 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26545 (or 26541 counting only the distinct ones).
The product of its digits is 24, while the sum is 11.
The square root of 212312 is about 460.7732631132. The cubic root of 212312 is about 59.6565563774.
Adding to 212312 its reverse (213212), we get a palindrome (425524).
Subtracting 212312 from its reverse (213212), we obtain a square (900 = 302).
The spelling of 212312 in words is "two hundred twelve thousand, three hundred twelve", and thus it is an iban number.
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