20131101320 has 64 divisors (see below), whose sum is σ = 49447497600. Its totient is φ = 7315246080.

The previous prime is 20131101283. The next prime is 20131101323. The reversal of 20131101320 is 2310113102.

It is a super-2 number, since 2×20131101320² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20131101295 and 20131101304.

It is not an unprimeable number, because it can be changed into a prime (20131101323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 639797 + ... + 670523.

It is an arithmetic number, because the mean of its divisors is an integer number (772617150).

Almost surely, 2^20131101320 is an apocalyptic number.

20131101320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131101320 is an abundant number, since it is smaller than the sum of its proper divisors (29316396280).

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

20131101320 is a wasteful number, since it uses less digits than its factorization.

20131101320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32238 (or 32234 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20131101320 its reverse (2310113102), we get a palindrome (22441214422).

The spelling of 20131101320 in words is "twenty billion, one hundred thirty-one million, one hundred one thousand, three hundred twenty".