43431143403 has 4 divisors (see below), whose sum is σ = 57908191208. Its totient is φ = 28954095600.

The previous prime is 43431143359. The next prime is 43431143423. The reversal of 43431143403 is 30434113434.

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

It is not a de Polignac number, because 43431143403 - 2²⁴ = 43414366187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43431143423) 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, 7238523898 + ... + 7238523903.

It is an arithmetic number, because the mean of its divisors is an integer number (14477047802).

Almost surely, 2^43431143403 is an apocalyptic number.

43431143403 is a deficient number, since it is larger than the sum of its proper divisors (14477047805).

43431143403 is a wasteful number, since it uses less digits than its factorization.

43431143403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14477047804.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 43431143403 its reverse (30434113434), we get a palindrome (73865256837).

The spelling of 43431143403 in words is "forty-three billion, four hundred thirty-one million, one hundred forty-three thousand, four hundred three".