431943327687 has 4 divisors (see below), whose sum is σ = 575924436920. Its totient is φ = 287962218456.

The previous prime is 431943327679. The next prime is 431943327691. The reversal of 431943327687 is 786723349134.

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

It is not a de Polignac number, because 431943327687 - 2³ = 431943327679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431943327637) 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, 71990554612 + ... + 71990554617.

It is an arithmetic number, because the mean of its divisors is an integer number (143981109230).

Almost surely, 2^431943327687 is an apocalyptic number.

431943327687 is a deficient number, since it is larger than the sum of its proper divisors (143981109233).

431943327687 is a wasteful number, since it uses less digits than its factorization.

431943327687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143981109232.

The product of its digits is 18289152, while the sum is 57.

The spelling of 431943327687 in words is "four hundred thirty-one billion, nine hundred forty-three million, three hundred twenty-seven thousand, six hundred eighty-seven".