442931 has 4 divisors (see below), whose sum is σ = 444264. Its totient is φ = 441600.

The previous prime is 442919. The next prime is 442961. The reversal of 442931 is 139244.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 442931 - 2¹⁰ = 441907 is a prime.

It is a super-2 number, since 2×442931² = 392375741522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442897 and 442906.

It is not an unprimeable number, because it can be changed into a prime (442961) 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, 296 + ... + 986.

It is an arithmetic number, because the mean of its divisors is an integer number (111066).

2⁴⁴²⁹³¹ is an apocalyptic number.

442931 is a deficient number, since it is larger than the sum of its proper divisors (1333).

442931 is an equidigital number, since it uses as much as digits as its factorization.

442931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its digits is 864, while the sum is 23.

The square root of 442931 is about 665.5306153739. The cubic root of 442931 is about 76.2275612555.

The spelling of 442931 in words is "four hundred forty-two thousand, nine hundred thirty-one".