442240212331 has 32 divisors (see below), whose sum is σ = 484196014080. Its totient is φ = 402366009600.

The previous prime is 442240212313. The next prime is 442240212353. The reversal of 442240212331 is 133212042244.

It is a de Polignac number, because none of the positive numbers 2^k-442240212331 is a prime.

It is a super-2 number, since 2×442240212331² (a number of 24 digits) 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 442240212331.

It is not an unprimeable number, because it can be changed into a prime (442240212131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73058301 + ... + 73064353.

It is an arithmetic number, because the mean of its divisors is an integer number (15131125440).

Almost surely, 2^442240212331 is an apocalyptic number.

442240212331 is a deficient number, since it is larger than the sum of its proper divisors (41955801749).

442240212331 is a wasteful number, since it uses less digits than its factorization.

442240212331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 442240212331 its reverse (133212042244), we get a palindrome (575452254575).

The spelling of 442240212331 in words is "four hundred forty-two billion, two hundred forty million, two hundred twelve thousand, three hundred thirty-one".