2112440311 has 4 divisors (see below), whose sum is σ = 2223621400. Its totient is φ = 2001259224.

The previous prime is 2112440299. The next prime is 2112440357. The reversal of 2112440311 is 1130442112.

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 2112440311 - 2⁵ = 2112440279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 111181069 = 2112440311 / (2 + 1 + 1 + 2 + 4 + 4 + 0 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112440411) 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, 55590516 + ... + 55590553.

It is an arithmetic number, because the mean of its divisors is an integer number (555905350).

Almost surely, 2^2112440311 is an apocalyptic number.

2112440311 is a deficient number, since it is larger than the sum of its proper divisors (111181089).

2112440311 is a wasteful number, since it uses less digits than its factorization.

2112440311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111181088.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2112440311 is about 45961.2914418209. The cubic root of 2112440311 is about 1283.1028869550.

Adding to 2112440311 its reverse (1130442112), we get a palindrome (3242882423).

The spelling of 2112440311 in words is "two billion, one hundred twelve million, four hundred forty thousand, three hundred eleven".