12031316 has 24 divisors (see below), whose sum is σ = 23076480. Its totient is φ = 5443200.

The previous prime is 12031307. The next prime is 12031319. The reversal of 12031316 is 61313021.

It is a junction number, because it is equal to n+sod(n) for n = 12031294 and 12031303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031319) 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 7 ways as a sum of consecutive naturals, for example, 11420 + ... + 12428.

It is an arithmetic number, because the mean of its divisors is an integer number (961520).

Almost surely, 2^12031316 is an apocalyptic number.

It is an amenable number.

12031316 is a deficient number, since it is larger than the sum of its proper divisors (11045164).

12031316 is a wasteful number, since it uses less digits than its factorization.

12031316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295 (or 1293 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 12031316 is about 3468.6187452645. The cubic root of 12031316 is about 229.1418303589.

Adding to 12031316 its reverse (61313021), we get a palindrome (73344337).

The spelling of 12031316 in words is "twelve million, thirty-one thousand, three hundred sixteen".