320331011 has 16 divisors (see below), whose sum is σ = 430096128. Its totient is φ = 230407200.

The previous prime is 320330999. The next prime is 320331019. The reversal of 320331011 is 110133023.

It is a cyclic number.

It is not a de Polignac number, because 320331011 - 2¹⁸ = 320068867 is a prime.

It is a super-2 number, since 2×320331011² = 205223913216564242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320331019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159005 + ... + 161006.

It is an arithmetic number, because the mean of its divisors is an integer number (26881008).

Almost surely, 2^320331011 is an apocalyptic number.

320331011 is a deficient number, since it is larger than the sum of its proper divisors (109765117).

320331011 is a wasteful number, since it uses less digits than its factorization.

320331011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320042.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 320331011 is about 17897.7934673523. The cubic root of 320331011 is about 684.2261394183.

Adding to 320331011 its reverse (110133023), we get a palindrome (430464034).

The spelling of 320331011 in words is "three hundred twenty million, three hundred thirty-one thousand, eleven".