320123320311011 has 6 divisors (see below), whose sum is σ = 372388352198580. Its totient is φ = 274391417409396.

The previous prime is 320123320310933. The next prime is 320123320311077. The reversal of 320123320311011 is 110113023321023.

It is not a de Polignac number, because 320123320311011 - 2²² = 320123316116707 is a prime.

It is a super-2 number, since 2×320123320311011² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320123320311811) 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, 3266564492921 + ... + 3266564493018.

It is an arithmetic number, because the mean of its divisors is an integer number (62064725366430).

Almost surely, 2^{320123320311011} is an apocalyptic number.

320123320311011 is a deficient number, since it is larger than the sum of its proper divisors (52265031887569).

320123320311011 is an equidigital number, since it uses as much as digits as its factorization.

320123320311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6533128985953 (or 6533128985946 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 320123320311011 its reverse (110113023321023), we get a palindrome (430236343632034).

The spelling of 320123320311011 in words is "three hundred twenty trillion, one hundred twenty-three billion, three hundred twenty million, three hundred eleven thousand, eleven".