2005320423 has 8 divisors (see below), whose sum is σ = 2674305136. Its totient is φ = 1336608000.

The previous prime is 2005320409. The next prime is 2005320433. The reversal of 2005320423 is 3240235002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2005320423 - 2⁴ = 2005320407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2005320423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005320403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50218 + ... + 80823.

It is an arithmetic number, because the mean of its divisors is an integer number (334288142).

Almost surely, 2^2005320423 is an apocalyptic number.

2005320423 is a deficient number, since it is larger than the sum of its proper divisors (668984713).

2005320423 is a wasteful number, since it uses less digits than its factorization.

2005320423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136145.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 2005320423 is about 44780.8041799162. The cubic root of 2005320423 is about 1261.0372794990.

Adding to 2005320423 its reverse (3240235002), we get a palindrome (5245555425).

The spelling of 2005320423 in words is "two billion, five million, three hundred twenty thousand, four hundred twenty-three".