23131305244220 has 48 divisors (see below), whose sum is σ = 49028993133120. Its totient is φ = 9166214693376.

The previous prime is 23131305244219. The next prime is 23131305244247. The reversal of 23131305244220 is 2244250313132.

It is a super-4 number, since 4×23131305244220⁴ (a number of 55 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13291529 + ... + 14930751.

It is an arithmetic number, because the mean of its divisors is an integer number (1021437356940).

Almost surely, 2^{23131305244220} is an apocalyptic number.

23131305244220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131305244220 is an abundant number, since it is smaller than the sum of its proper divisors (25897687888900).

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

23131305244220 is a wasteful number, since it uses less digits than its factorization.

23131305244220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645814 (or 1645812 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 23131305244220 its reverse (2244250313132), we get a palindrome (25375555557352).

The spelling of 23131305244220 in words is "twenty-three trillion, one hundred thirty-one billion, three hundred five million, two hundred forty-four thousand, two hundred twenty".