43011304020 has 144 divisors (see below), whose sum is σ = 138270404160. Its totient is φ = 11099557440.

The previous prime is 43011304013. The next prime is 43011304097. The reversal of 43011304020 is 2040311034.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 43011303984 and 43011304002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 477499 + ... + 560381.

It is an arithmetic number, because the mean of its divisors is an integer number (960211140).

Almost surely, 2^43011304020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43011304020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69135202080).

43011304020 is an abundant number, since it is smaller than the sum of its proper divisors (95259100140).

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

43011304020 is a wasteful number, since it uses less digits than its factorization.

43011304020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82963 (or 82924 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 43011304020 its reverse (2040311034), we get a palindrome (45051615054).

The spelling of 43011304020 in words is "forty-three billion, eleven million, three hundred four thousand, twenty".