320311141 has 4 divisors (see below), whose sum is σ = 321218892. Its totient is φ = 319403392.

The previous prime is 320311129. The next prime is 320311207. The reversal of 320311141 is 141113023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141113023 = 31 ⋅4552033.

It can be written as a sum of positive squares in 2 ways, for example, as 65270241 + 255040900 = 8079^2 + 15970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320311141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320411141) 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, 453346 + ... + 454051.

It is an arithmetic number, because the mean of its divisors is an integer number (80304723).

Almost surely, 2^320311141 is an apocalyptic number.

It is an amenable number.

320311141 is a deficient number, since it is larger than the sum of its proper divisors (907751).

320311141 is an equidigital number, since it uses as much as digits as its factorization.

320311141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907750.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 320311141 is about 17897.2383623843. The cubic root of 320311141 is about 684.2119917044.

Adding to 320311141 its reverse (141113023), we get a palindrome (461424164).

The spelling of 320311141 in words is "three hundred twenty million, three hundred eleven thousand, one hundred forty-one".