23311112820 has 24 divisors (see below), whose sum is σ = 65271116064. Its totient is φ = 6216296736.

The previous prime is 23311112791. The next prime is 23311112821. The reversal of 23311112820 is 2821111332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311112821) 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, 194259214 + ... + 194259333.

It is an arithmetic number, because the mean of its divisors is an integer number (2719629836).

Almost surely, 2^23311112820 is an apocalyptic number.

23311112820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311112820 is an abundant number, since it is smaller than the sum of its proper divisors (41960003244).

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

23311112820 is a wasteful number, since it uses less digits than its factorization.

23311112820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388518559 (or 388518557 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 23311112820 in words is "twenty-three billion, three hundred eleven million, one hundred twelve thousand, eight hundred twenty".