2013432321 has 4 divisors (see below), whose sum is σ = 2684576432. Its totient is φ = 1342288212.

The previous prime is 2013432313. The next prime is 2013432347. The reversal of 2013432321 is 1232343102.

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 2013432321 - 2³ = 2013432313 is a prime.

It is a super-2 number, since 2×2013432321² = 8107819422494894082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013432371) 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, 335572051 + ... + 335572056.

It is an arithmetic number, because the mean of its divisors is an integer number (671144108).

Almost surely, 2^2013432321 is an apocalyptic number.

It is an amenable number.

2013432321 is a deficient number, since it is larger than the sum of its proper divisors (671144111).

2013432321 is an equidigital number, since it uses as much as digits as its factorization.

2013432321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671144110.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2013432321 is about 44871.2861527280. The cubic root of 2013432321 is about 1262.7353694556.

Adding to 2013432321 its reverse (1232343102), we get a palindrome (3245775423).

The spelling of 2013432321 in words is "two billion, thirteen million, four hundred thirty-two thousand, three hundred twenty-one".