2012231320 has 64 divisors (see below), whose sum is σ = 4970743200. Its totient is φ = 727034880.

The previous prime is 2012231281. The next prime is 2012231327. The reversal of 2012231320 is 231322102.

It is a junction number, because it is equal to n+sod(n) for n = 2012231294 and 2012231303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012231327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54516 + ... + 83644.

Almost surely, 2^2012231320 is an apocalyptic number.

2012231320 is a gapful number since it is divisible by the number (20) 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 2012231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485371600).

2012231320 is an abundant number, since it is smaller than the sum of its proper divisors (2958511880).

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

2012231320 is a wasteful number, since it uses less digits than its factorization.

2012231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29308 (or 29304 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2012231320 is about 44857.9014221575. The cubic root of 2012231320 is about 1262.4842480144.

Adding to 2012231320 its reverse (231322102), we get a palindrome (2243553422).

It can be divided in two parts, 2012 and 231320, that added together give a palindrome (233332).

The spelling of 2012231320 in words is "two billion, twelve million, two hundred thirty-one thousand, three hundred twenty".