2811697223 has 4 divisors (see below), whose sum is σ = 2864748168. Its totient is φ = 2758646280.

The previous prime is 2811697219. The next prime is 2811697243. The reversal of 2811697223 is 3227961182.

2811697223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2811697223 - 2² = 2811697219 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 (2811697243) 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, 26525393 + ... + 26525498.

It is an arithmetic number, because the mean of its divisors is an integer number (716187042).

Almost surely, 2^2811697223 is an apocalyptic number.

2811697223 is a deficient number, since it is larger than the sum of its proper divisors (53050945).

2811697223 is an equidigital number, since it uses as much as digits as its factorization.

2811697223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53050944.

The product of its digits is 72576, while the sum is 41.

The square root of 2811697223 is about 53025.4393946905. The cubic root of 2811697223 is about 1411.4197297274.

The spelling of 2811697223 in words is "two billion, eight hundred eleven million, six hundred ninety-seven thousand, two hundred twenty-three".