43343031021 has 32 divisors (see below), whose sum is σ = 63416647680. Its totient is φ = 26229096000.

The previous prime is 43343031001. The next prime is 43343031079. The reversal of 43343031021 is 12013034334.

It is not a de Polignac number, because 43343031021 - 2¹¹ = 43343028973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43343030982 and 43343031000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43343031001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57036 + ... + 299898.

It is an arithmetic number, because the mean of its divisors is an integer number (1981770240).

Almost surely, 2^43343031021 is an apocalyptic number.

It is an amenable number.

43343031021 is a deficient number, since it is larger than the sum of its proper divisors (20073616659).

43343031021 is a wasteful number, since it uses less digits than its factorization.

43343031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243017.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 43343031021 its reverse (12013034334), we get a palindrome (55356065355).

The spelling of 43343031021 in words is "forty-three billion, three hundred forty-three million, thirty-one thousand, twenty-one".