23130132220 has 96 divisors (see below), whose sum is σ = 55578700800. Its totient is φ = 8015065344.

The previous prime is 23130132211. The next prime is 23130132257. The reversal of 23130132220 is 2223103132.

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

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, 506701 + ... + 550459.

It is an arithmetic number, because the mean of its divisors is an integer number (578944800).

Almost surely, 2^23130132220 is an apocalyptic number.

23130132220 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 23130132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27789350400).

23130132220 is an abundant number, since it is smaller than the sum of its proper divisors (32448568580).

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

23130132220 is a wasteful number, since it uses less digits than its factorization.

23130132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43907 (or 43905 counting only the distinct ones).

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

Adding to 23130132220 its reverse (2223103132), we get a palindrome (25353235352).

The spelling of 23130132220 in words is "twenty-three billion, one hundred thirty million, one hundred thirty-two thousand, two hundred twenty".