2012331305 has 8 divisors (see below), whose sum is σ = 2418819144. Its totient is φ = 1607184000.

The previous prime is 2012331301. The next prime is 2012331313. The reversal of 2012331305 is 5031332102.

It can be written as a sum of positive squares in 4 ways, for example, as 761152921 + 1251178384 = 27589^2 + 35372^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2012331305 - 2² = 2012331301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012331301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331826 + ... + 337835.

It is an arithmetic number, because the mean of its divisors is an integer number (302352393).

Almost surely, 2^2012331305 is an apocalyptic number.

It is an amenable number.

2012331305 is a deficient number, since it is larger than the sum of its proper divisors (406487839).

2012331305 is an equidigital number, since it uses as much as digits as its factorization.

2012331305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670267.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 2012331305 is about 44859.0158719515. The cubic root of 2012331305 is about 1262.5051580353.

Adding to 2012331305 its reverse (5031332102), we get a palindrome (7043663407).

The spelling of 2012331305 in words is "two billion, twelve million, three hundred thirty-one thousand, three hundred five".