2111393 has 4 divisors (see below), whose sum is σ = 2146068. Its totient is φ = 2076720.

The previous prime is 2111387. The next prime is 2111407. The reversal of 2111393 is 3931112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 350464 + 1760929 = 592^2 + 1327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111303) 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, 17246 + ... + 17367.

It is an arithmetic number, because the mean of its divisors is an integer number (536517).

2^2111393 is an apocalyptic number.

It is an amenable number.

2111393 is a deficient number, since it is larger than the sum of its proper divisors (34675).

2111393 is an equidigital number, since it uses as much as digits as its factorization.

2111393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34674.

The product of its digits is 162, while the sum is 20.

The square root of 2111393 is about 1453.0633158951. The cubic root of 2111393 is about 128.2890805237.

The spelling of 2111393 in words is "two million, one hundred eleven thousand, three hundred ninety-three".