23312012020 has 96 divisors (see below), whose sum is σ = 55780897536. Its totient is φ = 8100787200.

The previous prime is 23312011993. The next prime is 23312012039. The reversal of 23312012020 is 2021021332.

It is a junction number, because it is equal to n+sod(n) for n = 23312011985 and 23312012003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8706922 + ... + 8709598.

It is an arithmetic number, because the mean of its divisors is an integer number (581051016).

Almost surely, 2^23312012020 is an apocalyptic number.

23312012020 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 23312012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27890448768).

23312012020 is an abundant number, since it is smaller than the sum of its proper divisors (32468885516).

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

23312012020 is a wasteful number, since it uses less digits than its factorization.

23312012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441 (or 4439 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 23312012020 its reverse (2021021332), we get a palindrome (25333033352).

The spelling of 23312012020 in words is "twenty-three billion, three hundred twelve million, twelve thousand, twenty".