431441243 has 4 divisors (see below), whose sum is σ = 433081968. Its totient is φ = 429800520.

The previous prime is 431441203. The next prime is 431441251. The reversal of 431441243 is 342144134.

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 431441243 - 2⁸ = 431440987 is a prime.

It is a super-2 number, since 2×431441243² = 372283092322770098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431441203) 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, 819968 + ... + 820493.

It is an arithmetic number, because the mean of its divisors is an integer number (108270492).

Almost surely, 2^431441243 is an apocalyptic number.

431441243 is a deficient number, since it is larger than the sum of its proper divisors (1640725).

431441243 is a wasteful number, since it uses less digits than its factorization.

431441243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640724.

The product of its digits is 4608, while the sum is 26.

The square root of 431441243 is about 20771.1637372584. The cubic root of 431441243 is about 755.6265681581.

Adding to 431441243 its reverse (342144134), we get a palindrome (773585377).

The spelling of 431441243 in words is "four hundred thirty-one million, four hundred forty-one thousand, two hundred forty-three".