12431043020 has 48 divisors (see below), whose sum is σ = 28643092128. Its totient is φ = 4494236160.

The previous prime is 12431042971. The next prime is 12431043029. The reversal of 12431043020 is 2034013421.

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 = 12431042983 and 12431043001.

It is not an unprimeable number, because it can be changed into a prime (12431043029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125249 + ... + 201368.

It is an arithmetic number, because the mean of its divisors is an integer number (596731086).

Almost surely, 2^12431043020 is an apocalyptic number.

12431043020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12431043020 is an abundant number, since it is smaller than the sum of its proper divisors (16212049108).

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

12431043020 is a wasteful number, since it uses less digits than its factorization.

12431043020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326810 (or 326808 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12431043020 its reverse (2034013421), we get a palindrome (14465056441).

The spelling of 12431043020 in words is "twelve billion, four hundred thirty-one million, forty-three thousand, twenty".