320111102131 has 4 divisors (see below), whose sum is σ = 320124684600. Its totient is φ = 320097519664.

The previous prime is 320111102123. The next prime is 320111102141. The reversal of 320111102131 is 131201111023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131201111023 = 3167 ⋅41427569.

It is a cyclic number.

It is not a de Polignac number, because 320111102131 - 2³ = 320111102123 is a prime.

It is a super-2 number, since 2×320111102131² (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 (320111102141) 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, 6755821 + ... + 6803038.

It is an arithmetic number, because the mean of its divisors is an integer number (80031171150).

Almost surely, 2^320111102131 is an apocalyptic number.

320111102131 is a deficient number, since it is larger than the sum of its proper divisors (13582469).

320111102131 is a wasteful number, since it uses less digits than its factorization.

320111102131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13582468.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 320111102131 its reverse (131201111023), we get a palindrome (451312213154).

The spelling of 320111102131 in words is "three hundred twenty billion, one hundred eleven million, one hundred two thousand, one hundred thirty-one".