442313531 has 8 divisors (see below), whose sum is σ = 510907824. Its totient is φ = 378449920.

The previous prime is 442313491. The next prime is 442313537. The reversal of 442313531 is 135313244.

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

It is not a de Polignac number, because 442313531 - 2¹⁴ = 442297147 is a prime.

It is a super-2 number, since 2×442313531² = 391282519411375922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442313531.

It is not an unprimeable number, because it can be changed into a prime (442313537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1182470 + ... + 1182843.

It is an arithmetic number, because the mean of its divisors is an integer number (63863478).

Almost surely, 2^442313531 is an apocalyptic number.

442313531 is a deficient number, since it is larger than the sum of its proper divisors (68594293).

442313531 is a wasteful number, since it uses less digits than its factorization.

442313531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365341.

The product of its digits is 4320, while the sum is 26.

The square root of 442313531 is about 21031.2512942050. The cubic root of 442313531 is about 761.9212304594.

Adding to 442313531 its reverse (135313244), we get a palindrome (577626775).

The spelling of 442313531 in words is "four hundred forty-two million, three hundred thirteen thousand, five hundred thirty-one".