442340311 has 8 divisors (see below), whose sum is σ = 532138880. Its totient is φ = 359193528.

The previous prime is 442340303. The next prime is 442340321. The reversal of 442340311 is 113043244.

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

It is a cyclic number.

It is not a de Polignac number, because 442340311 - 2³ = 442340303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442340321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1662801 + ... + 1663066.

It is an arithmetic number, because the mean of its divisors is an integer number (66517360).

Almost surely, 2^442340311 is an apocalyptic number.

442340311 is a deficient number, since it is larger than the sum of its proper divisors (89798569).

442340311 is a wasteful number, since it uses less digits than its factorization.

442340311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325893.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 442340311 is about 21031.8879561489. The cubic root of 442340311 is about 761.9366070625.

Adding to 442340311 its reverse (113043244), we get a palindrome (555383555).

The spelling of 442340311 in words is "four hundred forty-two million, three hundred forty thousand, three hundred eleven".