320000012311 has 4 divisors (see below), whose sum is σ = 365714299792. Its totient is φ = 274285724832.

The previous prime is 320000012279. The next prime is 320000012327. The reversal of 320000012311 is 113210000023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113210000023 = 193 ⋅586580311.

It is not a de Polignac number, because 320000012311 - 2⁵ = 320000012279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320000012291 and 320000012300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320000018311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22857143730 + ... + 22857143743.

It is an arithmetic number, because the mean of its divisors is an integer number (91428574948).

Almost surely, 2^320000012311 is an apocalyptic number.

320000012311 is a deficient number, since it is larger than the sum of its proper divisors (45714287481).

320000012311 is an equidigital number, since it uses as much as digits as its factorization.

320000012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45714287480.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 320000012311 its reverse (113210000023), we get a palindrome (433210012334).

The spelling of 320000012311 in words is "three hundred twenty billion, twelve thousand, three hundred eleven".