2001311012 has 12 divisors (see below), whose sum is σ = 3536297856. Its totient is φ = 990940200.

The previous prime is 2001310981. The next prime is 2001311017. The reversal of 2001311012 is 2101131002.

It is a junction number, because it is equal to n+sod(n) for n = 2001310984 and 2001311002.

It is not an unprimeable number, because it can be changed into a prime (2001311017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2428364 + ... + 2429187.

It is an arithmetic number, because the mean of its divisors is an integer number (294691488).

Almost surely, 2^2001311012 is an apocalyptic number.

It is an amenable number.

2001311012 is a deficient number, since it is larger than the sum of its proper divisors (1534986844).

2001311012 is a wasteful number, since it uses less digits than its factorization.

2001311012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857658 (or 4857656 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2001311012 is about 44736.0147085097. The cubic root of 2001311012 is about 1260.1962850334.

Adding to 2001311012 its reverse (2101131002), we get a palindrome (4102442014).

The spelling of 2001311012 in words is "two billion, one million, three hundred eleven thousand, twelve".