442431203 has 4 divisors (see below), whose sum is σ = 442896408. Its totient is φ = 441966000.

The previous prime is 442431179. The next prime is 442431211. The reversal of 442431203 is 302134244.

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 442431203 - 2¹⁸ = 442169059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442431233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231173 + ... + 233078.

It is an arithmetic number, because the mean of its divisors is an integer number (110724102).

Almost surely, 2^442431203 is an apocalyptic number.

442431203 is a deficient number, since it is larger than the sum of its proper divisors (465205).

442431203 is an equidigital number, since it uses as much as digits as its factorization.

442431203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465204.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 442431203 is about 21034.0486592572. The cubic root of 442431203 is about 761.9887910164.

Adding to 442431203 its reverse (302134244), we get a palindrome (744565447).

The spelling of 442431203 in words is "four hundred forty-two million, four hundred thirty-one thousand, two hundred three".