23211323020 has 48 divisors (see below), whose sum is σ = 51322521600. Its totient is φ = 8793593280.

The previous prime is 23211322999. The next prime is 23211323029. The reversal of 23211323020 is 2032311232.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (23211323029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2548675 + ... + 2557765.

It is an arithmetic number, because the mean of its divisors is an integer number (1069219200).

Almost surely, 2^23211323020 is an apocalyptic number.

23211323020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23211323020 is an abundant number, since it is smaller than the sum of its proper divisors (28111198580).

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

23211323020 is a wasteful number, since it uses less digits than its factorization.

23211323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15838 (or 15836 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23211323020 its reverse (2032311232), we get a palindrome (25243634252).

The spelling of 23211323020 in words is "twenty-three billion, two hundred eleven million, three hundred twenty-three thousand, twenty".