2113012311 has 4 divisors (see below), whose sum is σ = 2817349752. Its totient is φ = 1408674872.

The previous prime is 2113012301. The next prime is 2113012339. The reversal of 2113012311 is 1132103112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2113012311 - 2⁷ = 2113012183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113012301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352168716 + ... + 352168721.

It is an arithmetic number, because the mean of its divisors is an integer number (704337438).

Almost surely, 2^2113012311 is an apocalyptic number.

2113012311 is a deficient number, since it is larger than the sum of its proper divisors (704337441).

2113012311 is an equidigital number, since it uses as much as digits as its factorization.

2113012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704337440.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2113012311 is about 45967.5136482277. The cubic root of 2113012311 is about 1283.2186880364.

Adding to 2113012311 its reverse (1132103112), we get a palindrome (3245115423).

The spelling of 2113012311 in words is "two billion, one hundred thirteen million, twelve thousand, three hundred eleven".