320111143441 has 4 divisors (see below), whose sum is σ = 320165878500. Its totient is φ = 320056408384.

The previous prime is 320111143409. The next prime is 320111143477. The reversal of 320111143441 is 144341111023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144341111023 = 41 ⋅3520514903.

It can be written as a sum of positive squares in 2 ways, for example, as 113339955600 + 206771187841 = 336660^2 + 454721^2 .

It is a cyclic number.

It is not a de Polignac number, because 320111143441 - 2⁵ = 320111143409 is a prime.

It is a super-2 number, since 2×320111143441² (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 (320111143481) 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, 27358756 + ... + 27370453.

It is an arithmetic number, because the mean of its divisors is an integer number (80041469625).

Almost surely, 2^320111143441 is an apocalyptic number.

It is an amenable number.

320111143441 is a deficient number, since it is larger than the sum of its proper divisors (54735059).

320111143441 is an equidigital number, since it uses as much as digits as its factorization.

320111143441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54735058.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 320111143441 its reverse (144341111023), we get a palindrome (464452254464).

The spelling of 320111143441 in words is "three hundred twenty billion, one hundred eleven million, one hundred forty-three thousand, four hundred forty-one".