2012001312 has 48 divisors (see below), whose sum is σ = 5316518592. Its totient is φ = 666220800.

The previous prime is 2012001311. The next prime is 2012001319. The reversal of 2012001312 is 2131002102.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is not an unprimeable number, because it can be changed into a prime (2012001311) 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, 54903 + ... + 83894.

It is an arithmetic number, because the mean of its divisors is an integer number (110760804).

Almost surely, 2^2012001312 is an apocalyptic number.

It is an amenable number.

2012001312 is an abundant number, since it is smaller than the sum of its proper divisors (3304517280).

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

2012001312 is a wasteful number, since it uses less digits than its factorization.

2012001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138961 (or 138953 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2012001312 is about 44855.3376088064. The cubic root of 2012001312 is about 1262.4361434487.

Adding to 2012001312 its reverse (2131002102), we get a palindrome (4143003414).

The spelling of 2012001312 in words is "two billion, twelve million, one thousand, three hundred twelve".