320331320011 has 4 divisors (see below), whose sum is σ = 320338302624. Its totient is φ = 320324337400.

The previous prime is 320331320009. The next prime is 320331320083. The reversal of 320331320011 is 110023133023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320331320011 - 2¹ = 320331320009 is a prime.

It is a super-2 number, since 2×320331320011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320331320311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3422035 + ... + 3514396.

It is an arithmetic number, because the mean of its divisors is an integer number (80084575656).

Almost surely, 2^320331320011 is an apocalyptic number.

320331320011 is a deficient number, since it is larger than the sum of its proper divisors (6982613).

320331320011 is an equidigital number, since it uses as much as digits as its factorization.

320331320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6982612.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 320331320011 its reverse (110023133023), we get a palindrome (430354453034).

The spelling of 320331320011 in words is "three hundred twenty billion, three hundred thirty-one million, three hundred twenty thousand, eleven".