2011312005 has 8 divisors (see below), whose sum is σ = 3218099232. Its totient is φ = 1072699728.

The previous prime is 2011311977. The next prime is 2011312019. The reversal of 2011312005 is 5002131102.

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

It is not a de Polignac number, because 2011312005 - 2¹⁶ = 2011246469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 134087467 = 2011312005 / (2 + 0 + 1 + 1 + 3 + 1 + 2 + 0 + 0 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67043719 + ... + 67043748.

It is an arithmetic number, because the mean of its divisors is an integer number (402262404).

Almost surely, 2^2011312005 is an apocalyptic number.

It is an amenable number.

2011312005 is a deficient number, since it is larger than the sum of its proper divisors (1206787227).

2011312005 is a wasteful number, since it uses less digits than its factorization.

2011312005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134087475.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 2011312005 is about 44847.6532830872. The cubic root of 2011312005 is about 1262.2919577464.

Adding to 2011312005 its reverse (5002131102), we get a palindrome (7013443107).

The spelling of 2011312005 in words is "two billion, eleven million, three hundred twelve thousand, five".