20031113320 has 32 divisors (see below), whose sum is σ = 45076389120. Its totient is φ = 8011310400.

The previous prime is 20031113309. The next prime is 20031113329. The reversal of 20031113320 is 2331113002.

It is a junction number, because it is equal to n+sod(n) for n = 20031113294 and 20031113303.

It is not an unprimeable number, because it can be changed into a prime (20031113329) 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, 286549 + ... + 349531.

It is an arithmetic number, because the mean of its divisors is an integer number (1408637160).

Almost surely, 2^20031113320 is an apocalyptic number.

20031113320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031113320 is an abundant number, since it is smaller than the sum of its proper divisors (25045275800).

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

20031113320 is a wasteful number, since it uses less digits than its factorization.

20031113320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70945 (or 70941 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20031113320 its reverse (2331113002), we get a palindrome (22362226322).

The spelling of 20031113320 in words is "twenty billion, thirty-one million, one hundred thirteen thousand, three hundred twenty".