43431433304201 has 4 divisors (see below), whose sum is σ = 43540832380932. Its totient is φ = 43322034227472.

The previous prime is 43431433304123. The next prime is 43431433304257. The reversal of 43431433304201 is 10240333413434.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29904492250000 + 13526941054201 = 5468500^2 + 3677899^2 .

It is a cyclic number.

It is not a de Polignac number, because 43431433304201 - 2⁴² = 39033386793097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43431433304261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54699537770 + ... + 54699538563.

It is an arithmetic number, because the mean of its divisors is an integer number (10885208095233).

Almost surely, 2^{43431433304201} is an apocalyptic number.

It is an amenable number.

43431433304201 is a deficient number, since it is larger than the sum of its proper divisors (109399076731).

43431433304201 is a wasteful number, since it uses less digits than its factorization.

43431433304201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109399076730.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 43431433304201 its reverse (10240333413434), we get a palindrome (53671766717635).

The spelling of 43431433304201 in words is "forty-three trillion, four hundred thirty-one billion, four hundred thirty-three million, three hundred four thousand, two hundred one".