2821305223 has 24 divisors (see below), whose sum is σ = 3208847616. Its totient is φ = 2459872800.

The previous prime is 2821305209. The next prime is 2821305299. The reversal of 2821305223 is 3225031282.

It is not a de Polignac number, because 2821305223 - 2²¹ = 2819208071 is a prime.

It is a super-2 number, since 2×2821305223² = 15919526322654159458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2821305191 and 2821305200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821305323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1506978 + ... + 1508848.

It is an arithmetic number, because the mean of its divisors is an integer number (133701984).

Almost surely, 2^2821305223 is an apocalyptic number.

2821305223 is a deficient number, since it is larger than the sum of its proper divisors (387542393).

2821305223 is a wasteful number, since it uses less digits than its factorization.

2821305223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103 (or 2074 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2821305223 is about 53115.9601532345. The cubic root of 2821305223 is about 1413.0255810887.

The spelling of 2821305223 in words is "two billion, eight hundred twenty-one million, three hundred five thousand, two hundred twenty-three".