2231303321 has 4 divisors (see below), whose sum is σ = 2402942052. Its totient is φ = 2059664592.

The previous prime is 2231303303. The next prime is 2231303369. The reversal of 2231303321 is 1233031322.

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 270142096 + 1961161225 = 16436^2 + 44285^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231303321 - 2³⁰ = 1157561497 is a prime.

It is a super-3 number, since 3×2231303321³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231303293 and 2231303302.

It is not an unprimeable number, because it can be changed into a prime (2231302321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85819346 + ... + 85819371.

It is an arithmetic number, because the mean of its divisors is an integer number (600735513).

Almost surely, 2^2231303321 is an apocalyptic number.

It is an amenable number.

2231303321 is a deficient number, since it is larger than the sum of its proper divisors (171638731).

2231303321 is a wasteful number, since it uses less digits than its factorization.

2231303321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171638730.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2231303321 is about 47236.6734751718. The cubic root of 2231303321 is about 1306.7310295229.

Adding to 2231303321 its reverse (1233031322), we get a palindrome (3464334643).

The spelling of 2231303321 in words is "two billion, two hundred thirty-one million, three hundred three thousand, three hundred twenty-one".