442313223 has 8 divisors (see below), whose sum is σ = 643364736. Its totient is φ = 268068600.

The previous prime is 442313197. The next prime is 442313227. The reversal of 442313223 is 322313244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442313223 - 2⁹ = 442312711 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 442313193 and 442313202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442313227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6701683 + ... + 6701748.

It is an arithmetic number, because the mean of its divisors is an integer number (80420592).

Almost surely, 2^442313223 is an apocalyptic number.

442313223 is a deficient number, since it is larger than the sum of its proper divisors (201051513).

442313223 is a wasteful number, since it uses less digits than its factorization.

442313223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13403445.

The product of its digits is 3456, while the sum is 24.

The square root of 442313223 is about 21031.2439717673. The cubic root of 442313223 is about 761.9210536077.

Adding to 442313223 its reverse (322313244), we get a palindrome (764626467).

The spelling of 442313223 in words is "four hundred forty-two million, three hundred thirteen thousand, two hundred twenty-three".