20302331100 has 144 divisors (see below), whose sum is σ = 59826170880. Its totient is φ = 5314348800.

The previous prime is 20302331083. The next prime is 20302331123. The reversal of 20302331100 is 113320302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20302331100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13156929 + ... + 13158471.

It is an arithmetic number, because the mean of its divisors is an integer number (415459520).

Almost surely, 2^20302331100 is an apocalyptic number.

20302331100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20302331100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29913085440).

20302331100 is an abundant number, since it is smaller than the sum of its proper divisors (39523839780).

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

20302331100 is a wasteful number, since it uses less digits than its factorization.

20302331100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340 (or 2333 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20302331100 its reverse (113320302), we get a palindrome (20415651402).

The spelling of 20302331100 in words is "twenty billion, three hundred two million, three hundred thirty-one thousand, one hundred".