23303213220 has 144 divisors (see below), whose sum is σ = 75975677568. Its totient is φ = 5321272320.

The previous prime is 23303213203. The next prime is 23303213261. The reversal of 23303213220 is 2231230332.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 3592380 + ... + 3598860.

It is an arithmetic number, because the mean of its divisors is an integer number (527608872).

Almost surely, 2^23303213220 is an apocalyptic number.

23303213220 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 23303213220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37987838784).

23303213220 is an abundant number, since it is smaller than the sum of its proper divisors (52672464348).

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

23303213220 is a wasteful number, since it uses less digits than its factorization.

23303213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7730 (or 7721 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 23303213220 its reverse (2231230332), we get a palindrome (25534443552).

The spelling of 23303213220 in words is "twenty-three billion, three hundred three million, two hundred thirteen thousand, two hundred twenty".