320403042011 has 32 divisors (see below), whose sum is σ = 361786521600. Its totient is φ = 281693543040.

The previous prime is 320403042007. The next prime is 320403042023. The reversal of 320403042011 is 110240304023.

It is not a de Polignac number, because 320403042011 - 2² = 320403042007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320403042061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38922266 + ... + 38930496.

It is an arithmetic number, because the mean of its divisors is an integer number (11305828800).

Almost surely, 2^320403042011 is an apocalyptic number.

320403042011 is a deficient number, since it is larger than the sum of its proper divisors (41383479589).

320403042011 is a wasteful number, since it uses less digits than its factorization.

320403042011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9659.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 320403042011 its reverse (110240304023), we get a palindrome (430643346034).

The spelling of 320403042011 in words is "three hundred twenty billion, four hundred three million, forty-two thousand, eleven".