2003442321 has 4 divisors (see below), whose sum is σ = 2671256432. Its totient is φ = 1335628212.

The previous prime is 2003442319. The next prime is 2003442341. The reversal of 2003442321 is 1232443002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2003442321 - 2¹ = 2003442319 is a prime.

It is a super-2 number, since 2×2003442321² = 8027562267147734082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2003442341) 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, 333907051 + ... + 333907056.

It is an arithmetic number, because the mean of its divisors is an integer number (667814108).

Almost surely, 2^2003442321 is an apocalyptic number.

It is an amenable number.

2003442321 is a deficient number, since it is larger than the sum of its proper divisors (667814111).

2003442321 is an equidigital number, since it uses as much as digits as its factorization.

2003442321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667814110.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2003442321 is about 44759.8293227309. The cubic root of 2003442321 is about 1260.6434776966.

Adding to 2003442321 its reverse (1232443002), we get a palindrome (3235885323).

The spelling of 2003442321 in words is "two billion, three million, four hundred forty-two thousand, three hundred twenty-one".