12310320 has 80 divisors (see below), whose sum is σ = 41640192. Its totient is φ = 2983680.

The previous prime is 12310303. The next prime is 12310321. The reversal of 12310320 is 2301321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12310296 and 12310305.

It is not an unprimeable number, because it can be changed into a prime (12310321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309 + ... + 4971.

Almost surely, 2^12310320 is an apocalyptic number.

12310320 is a gapful number since it is divisible by the number (10) 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 12310320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20820096).

12310320 is an abundant number, since it is smaller than the sum of its proper divisors (29329872).

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

12310320 is a wasteful number, since it uses less digits than its factorization.

12310320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4690 (or 4684 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12310320 is about 3508.6065610154. The cubic root of 12310320 is about 230.8995646667.

Adding to 12310320 its reverse (2301321), we get a palindrome (14611641).

The spelling of 12310320 in words is "twelve million, three hundred ten thousand, three hundred twenty".