2002231321 has 4 divisors (see below), whose sum is σ = 2120009652. Its totient is φ = 1884452992.

The previous prime is 2002231313. The next prime is 2002231339. The reversal of 2002231321 is 1231322002.

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 1699088400 + 303142921 = 41220^2 + 17411^2 .

It is not a de Polignac number, because 2002231321 - 2³ = 2002231313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002231295 and 2002231304.

It is not an unprimeable number, because it can be changed into a prime (2002231421) 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, 58889140 + ... + 58889173.

It is an arithmetic number, because the mean of its divisors is an integer number (530002413).

Almost surely, 2^2002231321 is an apocalyptic number.

It is an amenable number.

2002231321 is a deficient number, since it is larger than the sum of its proper divisors (117778331).

2002231321 is a wasteful number, since it uses less digits than its factorization.

2002231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117778330.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2002231321 is about 44746.2995229773. The cubic root of 2002231321 is about 1260.3894238054.

Adding to 2002231321 its reverse (1231322002), we get a palindrome (3233553323).

The spelling of 2002231321 in words is "two billion, two million, two hundred thirty-one thousand, three hundred twenty-one".