12313212 has 12 divisors (see below), whose sum is σ = 28730856. Its totient is φ = 4104400.

The previous prime is 12313187. The next prime is 12313229. The reversal of 12313212 is 21231321.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 12313191 and 12313200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513039 + ... + 513062.

It is an arithmetic number, because the mean of its divisors is an integer number (2394238).

Almost surely, 2^12313212 is an apocalyptic number.

12313212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12313212 is an abundant number, since it is smaller than the sum of its proper divisors (16417644).

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

12313212 is a wasteful number, since it uses less digits than its factorization.

12313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026108 (or 1026106 counting only the distinct ones).

The product of its digits is 72, while the sum is 15.

The square root of 12313212 is about 3509.0186662370. The cubic root of 12313212 is about 230.9176445990.

Adding to 12313212 its reverse (21231321), we get a palindrome (33544533).

It can be divided in two parts, 1231321 and 2, that multiplied together give a palindrome (2462642).

The spelling of 12313212 in words is "twelve million, three hundred thirteen thousand, two hundred twelve".