442231343 has 4 divisors (see below), whose sum is σ = 442379808. Its totient is φ = 442082880.

The previous prime is 442231303. The next prime is 442231357. The reversal of 442231343 is 343132244.

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 442231343 - 2¹⁴ = 442214959 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 (442231303) 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, 69671 + ... + 75752.

It is an arithmetic number, because the mean of its divisors is an integer number (110594952).

Almost surely, 2^442231343 is an apocalyptic number.

442231343 is a deficient number, since it is larger than the sum of its proper divisors (148465).

442231343 is a wasteful number, since it uses less digits than its factorization.

442231343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148464.

The product of its digits is 6912, while the sum is 26.

The square root of 442231343 is about 21029.2972540691. The cubic root of 442231343 is about 761.8740356857.

Adding to 442231343 its reverse (343132244), we get a palindrome (785363587).

Subtracting from 442231343 its reverse (343132244), we obtain a palindrome (99099099).

The spelling of 442231343 in words is "four hundred forty-two million, two hundred thirty-one thousand, three hundred forty-three".