320120011 has 8 divisors (see below), whose sum is σ = 322560000. Its totient is φ = 317688360.

The previous prime is 320119991. The next prime is 320120023. The reversal of 320120011 is 110021023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320120011 is a prime.

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 320120011.

It is not an unprimeable number, because it can be changed into a prime (320130011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89740 + ... + 93238.

It is an arithmetic number, because the mean of its divisors is an integer number (40320000).

Almost surely, 2^320120011 is an apocalyptic number.

320120011 is the 8002-nd centered decagonal number.

320120011 is a deficient number, since it is larger than the sum of its proper divisors (2439989).

320120011 is a wasteful number, since it uses less digits than its factorization.

320120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4169.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 320120011 is about 17891.8979149782. The cubic root of 320120011 is about 684.0758746183.

Adding to 320120011 its reverse (110021023), we get a palindrome (430141034).

The spelling of 320120011 in words is "three hundred twenty million, one hundred twenty thousand, eleven".