442323431313 has 4 divisors (see below), whose sum is σ = 589764575088. Its totient is φ = 294882287540.

The previous prime is 442323431309. The next prime is 442323431357. The reversal of 442323431313 is 313134323244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442323431313 - 2² = 442323431309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442323431713) 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, 73720571883 + ... + 73720571888.

It is an arithmetic number, because the mean of its divisors is an integer number (147441143772).

Almost surely, 2^442323431313 is an apocalyptic number.

It is an amenable number.

442323431313 is a deficient number, since it is larger than the sum of its proper divisors (147441143775).

442323431313 is a wasteful number, since it uses less digits than its factorization.

442323431313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147441143774.

The product of its digits is 62208, while the sum is 33.

Adding to 442323431313 its reverse (313134323244), we get a palindrome (755457754557).

The spelling of 442323431313 in words is "four hundred forty-two billion, three hundred twenty-three million, four hundred thirty-one thousand, three hundred thirteen".