2923319221 has 4 divisors (see below), whose sum is σ = 2925683692. Its totient is φ = 2920954752.

The previous prime is 2923319213. The next prime is 2923319249. The reversal of 2923319221 is 1229133292.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 876752100 + 2046567121 = 29610^2 + 45239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2923319221 - 2³ = 2923319213 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 (2923319521) 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, 1180380 + ... + 1182853.

It is an arithmetic number, because the mean of its divisors is an integer number (731420923).

Almost surely, 2^2923319221 is an apocalyptic number.

It is an amenable number.

2923319221 is a deficient number, since it is larger than the sum of its proper divisors (2364471).

2923319221 is a wasteful number, since it uses less digits than its factorization.

2923319221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364470.

The product of its digits is 11664, while the sum is 34.

The square root of 2923319221 is about 54067.7280917184. The cubic root of 2923319221 is about 1429.8552710226.

The spelling of 2923319221 in words is "two billion, nine hundred twenty-three million, three hundred nineteen thousand, two hundred twenty-one".