442000313 has 4 divisors (see below), whose sum is σ = 443596260. Its totient is φ = 440404368.

The previous prime is 442000309. The next prime is 442000319. The reversal of 442000313 is 313000244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 294911929 + 147088384 = 17173^2 + 12128^2 .

It is a cyclic number.

It is not a de Polignac number, because 442000313 - 2² = 442000309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442000291 and 442000300.

It is not an unprimeable number, because it can be changed into a prime (442000319) 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, 797558 + ... + 798111.

It is an arithmetic number, because the mean of its divisors is an integer number (110899065).

Almost surely, 2^442000313 is an apocalyptic number.

It is an amenable number.

442000313 is a deficient number, since it is larger than the sum of its proper divisors (1595947).

442000313 is a wasteful number, since it uses less digits than its factorization.

442000313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595946.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 442000313 is about 21023.8034855732. The cubic root of 442000313 is about 761.7413401170.

Adding to 442000313 its reverse (313000244), we get a palindrome (755000557).

The spelling of 442000313 in words is "four hundred forty-two million, three hundred thirteen", and thus it is an aban number.