2303323012021 has 4 divisors (see below), whose sum is σ = 2382747943500. Its totient is φ = 2223898080544.

The previous prime is 2303323012007. The next prime is 2303323012073. The reversal of 2303323012021 is 1202103233032.

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 717813923121 + 1585509088900 = 847239^2 + 1259170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2303323012021 - 2²⁵ = 2303289457589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2303323011983 and 2303323012001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2303323012621) 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, 39712465696 + ... + 39712465753.

It is an arithmetic number, because the mean of its divisors is an integer number (595686985875).

Almost surely, 2^{2303323012021} is an apocalyptic number.

It is an amenable number.

2303323012021 is a deficient number, since it is larger than the sum of its proper divisors (79424931479).

2303323012021 is an equidigital number, since it uses as much as digits as its factorization.

2303323012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79424931478.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 2303323012021 its reverse (1202103233032), we get a palindrome (3505426245053).

The spelling of 2303323012021 in words is "two trillion, three hundred three billion, three hundred twenty-three million, twelve thousand, twenty-one".