23231302220 has 96 divisors (see below), whose sum is σ = 57052598400. Its totient is φ = 7781437440.

The previous prime is 23231302183. The next prime is 23231302267. The reversal of 23231302220 is 2220313232.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23231302192 and 23231302201.

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, 1263332 + ... + 1281588.

It is an arithmetic number, because the mean of its divisors is an integer number (594297900).

Almost surely, 2^23231302220 is an apocalyptic number.

23231302220 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 23231302220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28526299200).

23231302220 is an abundant number, since it is smaller than the sum of its proper divisors (33821296180).

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

23231302220 is a wasteful number, since it uses less digits than its factorization.

23231302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18483 (or 18481 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23231302220 its reverse (2220313232), we get a palindrome (25451615452).

The spelling of 23231302220 in words is "twenty-three billion, two hundred thirty-one million, three hundred two thousand, two hundred twenty".