12051312 has 160 divisors (see below), whose sum is σ = 39997440. Its totient is φ = 3041280.

The previous prime is 12051293. The next prime is 12051323. The reversal of 12051312 is 21315021.

It is a junction number, because it is equal to n+sod(n) for n = 12051291 and 12051300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135364 + ... + 135452.

It is an arithmetic number, because the mean of its divisors is an integer number (249984).

Almost surely, 2^12051312 is an apocalyptic number.

12051312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is a pronic number, being equal to 3471×3472.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12051312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19998720).

12051312 is an abundant number, since it is smaller than the sum of its proper divisors (27946128).

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

12051312 is a wasteful number, since it uses less digits than its factorization.

12051312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 12051312 is about 3471.4999639925. The cubic root of 12051312 is about 229.2687043712.

Adding to 12051312 its reverse (21315021), we get a palindrome (33366333).

The spelling of 12051312 in words is "twelve million, fifty-one thousand, three hundred twelve".