20130322005 has 24 divisors (see below), whose sum is σ = 34904994072. Its totient is φ = 10732345344.

The previous prime is 20130321973. The next prime is 20130322007. The reversal of 20130322005 is 50022303102.

It can be written as a sum of positive squares in 4 ways, for example, as 1200414609 + 18929907396 = 34647^2 + 137586^2 .

It is not a de Polignac number, because 20130322005 - 2⁵ = 20130321973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130322007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50277 + ... + 206853.

It is an arithmetic number, because the mean of its divisors is an integer number (1454374753).

Almost surely, 2^20130322005 is an apocalyptic number.

It is an amenable number.

20130322005 is a deficient number, since it is larger than the sum of its proper divisors (14774672067).

20130322005 is a wasteful number, since it uses less digits than its factorization.

20130322005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159445 (or 159442 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 20130322005 its reverse (50022303102), we get a palindrome (70152625107).

The spelling of 20130322005 in words is "twenty billion, one hundred thirty million, three hundred twenty-two thousand, five".