2821831223 has 6 divisors (see below), whose sum is σ = 2850057072. Its totient is φ = 2793882200.

The previous prime is 2821831217. The next prime is 2821831267. The reversal of 2821831223 is 3221381282.

2821831223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2821831223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2821831223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821831423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128111 + ... + 148512.

It is an arithmetic number, because the mean of its divisors is an integer number (475009512).

Almost surely, 2^2821831223 is an apocalyptic number.

2821831223 is a deficient number, since it is larger than the sum of its proper divisors (28225849).

2821831223 is an equidigital number, since it uses as much as digits as its factorization.

2821831223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276825 (or 276724 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 2821831223 is about 53120.9113532515. The cubic root of 2821831223 is about 1413.1133897696.

The spelling of 2821831223 in words is "two billion, eight hundred twenty-one million, eight hundred thirty-one thousand, two hundred twenty-three".