2300320021 has 4 divisors (see below), whose sum is σ = 2300467500. Its totient is φ = 2300172544.

The previous prime is 2300320019. The next prime is 2300320027. The reversal of 2300320021 is 1200230032.

It is a happy number.

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 1533583921 + 766736100 = 39161^2 + 27690^2 .

It is a cyclic number.

It is not a de Polignac number, because 2300320021 - 2¹ = 2300320019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2300319983 and 2300320010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2300320027) 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, 47146 + ... + 82603.

It is an arithmetic number, because the mean of its divisors is an integer number (575116875).

Almost surely, 2^2300320021 is an apocalyptic number.

It is an amenable number.

2300320021 is a deficient number, since it is larger than the sum of its proper divisors (147479).

2300320021 is a wasteful number, since it uses less digits than its factorization.

2300320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147478.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 2300320021 is about 47961.6515666423. The cubic root of 2300320021 is about 1320.0673406493.

Adding to 2300320021 its reverse (1200230032), we get a palindrome (3500550053).

The spelling of 2300320021 in words is "two billion, three hundred million, three hundred twenty thousand, twenty-one".