431134643 has 4 divisors (see below), whose sum is σ = 453825960. Its totient is φ = 408443328.

The previous prime is 431134633. The next prime is 431134667. The reversal of 431134643 is 346431134.

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

It is a cyclic number.

It is not a de Polignac number, because 431134643 - 2²⁰ = 430086067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431134633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11345630 + ... + 11345667.

It is an arithmetic number, because the mean of its divisors is an integer number (113456490).

Almost surely, 2^431134643 is an apocalyptic number.

431134643 is a deficient number, since it is larger than the sum of its proper divisors (22691317).

431134643 is a wasteful number, since it uses less digits than its factorization.

431134643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22691316.

The product of its digits is 10368, while the sum is 29.

The square root of 431134643 is about 20763.7820013600. The cubic root of 431134643 is about 755.4475325725.

Adding to 431134643 its reverse (346431134), we get a palindrome (777565777).

The spelling of 431134643 in words is "four hundred thirty-one million, one hundred thirty-four thousand, six hundred forty-three".