2012310405 has 64 divisors (see below), whose sum is σ = 4175585280. Its totient is φ = 900320832.

The previous prime is 2012310401. The next prime is 2012310437. The reversal of 2012310405 is 5040132102.

It is not a de Polignac number, because 2012310405 - 2² = 2012310401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012310401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21762 + ... + 67068.

It is an arithmetic number, because the mean of its divisors is an integer number (65243520).

Almost surely, 2^2012310405 is an apocalyptic number.

It is an amenable number.

2012310405 is an abundant number, since it is smaller than the sum of its proper divisors (2163274875).

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

2012310405 is a wasteful number, since it uses less digits than its factorization.

2012310405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45375 (or 45369 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2012310405 is about 44858.7829192902. The cubic root of 2012310405 is about 1262.5007872426.

Adding to 2012310405 its reverse (5040132102), we get a palindrome (7052442507).

The spelling of 2012310405 in words is "two billion, twelve million, three hundred ten thousand, four hundred five".