431243 has 4 divisors (see below), whose sum is σ = 453960. Its totient is φ = 408528.

The previous prime is 431237. The next prime is 431251. The reversal of 431243 is 342134.

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 431243 - 2⁸ = 430987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431203) 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, 11330 + ... + 11367.

It is an arithmetic number, because the mean of its divisors is an integer number (113490).

2⁴³¹²⁴³ is an apocalyptic number.

431243 is a deficient number, since it is larger than the sum of its proper divisors (22717).

431243 is a wasteful number, since it uses less digits than its factorization.

431243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22716.

The product of its digits is 288, while the sum is 17.

The square root of 431243 is about 656.6909470976. The cubic root of 431243 is about 75.5510816106.

Adding to 431243 its reverse (342134), we get a palindrome (773377).

The spelling of 431243 in words is "four hundred thirty-one thousand, two hundred forty-three".