12312208 has 40 divisors (see below), whose sum is σ = 24966656. Its totient is φ = 5875200.

The previous prime is 12312197. The next prime is 12312217. The reversal of 12312208 is 80221321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50968 + ... + 51208.

Almost surely, 2^12312208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12312208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12483328).

12312208 is an abundant number, since it is smaller than the sum of its proper divisors (12654448).

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

12312208 is a wasteful number, since it uses less digits than its factorization.

12312208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12312208 is about 3508.8756033807. The cubic root of 12312208 is about 230.9113682075.

Adding to 12312208 its reverse (80221321), we get a palindrome (92533529).

The spelling of 12312208 in words is "twelve million, three hundred twelve thousand, two hundred eight".