320442011 has 6 divisors (see below), whose sum is σ = 338195412. Its totient is φ = 303576300.

The previous prime is 320441983. The next prime is 320442029. The reversal of 320442011 is 110244023.

It is a de Polignac number, because none of the positive numbers 2^k-320442011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320445011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 443465 + ... + 444186.

It is an arithmetic number, because the mean of its divisors is an integer number (56365902).

Almost surely, 2^320442011 is an apocalyptic number.

320442011 is a deficient number, since it is larger than the sum of its proper divisors (17753401).

320442011 is an equidigital number, since it uses as much as digits as its factorization.

320442011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887689 (or 887670 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 320442011 is about 17900.8941396792. The cubic root of 320442011 is about 684.3051621875.

Adding to 320442011 its reverse (110244023), we get a palindrome (430686034).

The spelling of 320442011 in words is "three hundred twenty million, four hundred forty-two thousand, eleven".