12162312 has 60 divisors (see below), whose sum is σ = 34316205. Its totient is φ = 4024512.

The previous prime is 12162263. The next prime is 12162317. The reversal of 12162312 is 21326121.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 12068676 + 93636 = 3474^2 + 306^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2466.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is not an unprimeable number, because it can be changed into a prime (12162317) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 88708 + ... + 88844.

Almost surely, 2^12162312 is an apocalyptic number.

12162312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12162312

12162312 is an abundant number, since it is smaller than the sum of its proper divisors (22153893).

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

12162312 is an equidigital number, since it uses as much as digits as its factorization.

12162312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 142 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 12162312 is about 3487.4506448121. The cubic root of 12162312 is about 229.9704561926.

Multiplying 12162312 by its sum of digits (18), we get a square (218921616 = 14796²).

12162312 divided by its sum of digits (18) gives a square (675684 = 822²).

Adding to 12162312 its reverse (21326121), we get a palindrome (33488433).

The spelling of 12162312 in words is "twelve million, one hundred sixty-two thousand, three hundred twelve".