12431233220220 has 36 divisors (see below), whose sum is σ = 37708074101880. Its totient is φ = 3314995525344.

The previous prime is 12431233220213. The next prime is 12431233220221. The reversal of 12431233220220 is 2202233213421.

12431233220220 is a `hidden beast` number, since 1 + 2 + 4 + 312 + 3 + 322 + 0 + 2 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×12431233220220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431233220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34531203210 + ... + 34531203569.

It is an arithmetic number, because the mean of its divisors is an integer number (1047446502830).

Almost surely, 2^{12431233220220} is an apocalyptic number.

12431233220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12431233220220 is an abundant number, since it is smaller than the sum of its proper divisors (25276840881660).

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

12431233220220 is a wasteful number, since it uses less digits than its factorization.

12431233220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69062406794 (or 69062406789 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 12431233220220 its reverse (2202233213421), we get a palindrome (14633466433641).

The spelling of 12431233220220 in words is "twelve trillion, four hundred thirty-one billion, two hundred thirty-three million, two hundred twenty thousand, two hundred twenty".