20130320120 has 16 divisors (see below), whose sum is σ = 45293220360. Its totient is φ = 8052128032.

The previous prime is 20130320117. The next prime is 20130320123. The reversal of 20130320120 is 2102303102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20130320117) and next prime (20130320123).

It is a junction number, because it is equal to n+sod(n) for n = 20130320095 and 20130320104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130320123) 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, 251628962 + ... + 251629041.

Almost surely, 2^20130320120 is an apocalyptic number.

20130320120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130320120 is an abundant number, since it is smaller than the sum of its proper divisors (25162900240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20130320120 is a wasteful number, since it uses less digits than its factorization.

20130320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503258014 (or 503258010 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20130320120 its reverse (2102303102), we get a palindrome (22232623222).

The spelling of 20130320120 in words is "twenty billion, one hundred thirty million, three hundred twenty thousand, one hundred twenty".