2216743723 has 4 divisors (see below), whose sum is σ = 2221258968. Its totient is φ = 2212228480.

The previous prime is 2216743681. The next prime is 2216743729. The reversal of 2216743723 is 3273476122.

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 2216743723 - 2⁹ = 2216743211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216743729) 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, 2256886 + ... + 2257867.

It is an arithmetic number, because the mean of its divisors is an integer number (555314742).

Almost surely, 2^2216743723 is an apocalyptic number.

2216743723 is a deficient number, since it is larger than the sum of its proper divisors (4515245).

2216743723 is an equidigital number, since it uses as much as digits as its factorization.

2216743723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515244.

The product of its digits is 84672, while the sum is 37.

The square root of 2216743723 is about 47082.3079616962. The cubic root of 2216743723 is about 1303.8826179594.

The spelling of 2216743723 in words is "two billion, two hundred sixteen million, seven hundred forty-three thousand, seven hundred twenty-three".