2291788223 has 4 divisors (see below), whose sum is σ = 2292471048. Its totient is φ = 2291105400.

The previous prime is 2291788127. The next prime is 2291788229. The reversal of 2291788223 is 3228871922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3228871922 = 2 ⋅1614435961.

It is a cyclic number.

It is not a de Polignac number, because 2291788223 - 2²⁴ = 2275011007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291788229) 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, 336353 + ... + 343098.

It is an arithmetic number, because the mean of its divisors is an integer number (573117762).

Almost surely, 2^2291788223 is an apocalyptic number.

2291788223 is a deficient number, since it is larger than the sum of its proper divisors (682825).

2291788223 is an equidigital number, since it uses as much as digits as its factorization.

2291788223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682824.

The product of its digits is 193536, while the sum is 44.

The square root of 2291788223 is about 47872.6249854758. The cubic root of 2291788223 is about 1318.4332925351.

The spelling of 2291788223 in words is "two billion, two hundred ninety-one million, seven hundred eighty-eight thousand, two hundred twenty-three".