320441331 has 24 divisors (see below), whose sum is σ = 505448640. Its totient is φ = 180000912.

The previous prime is 320441323. The next prime is 320441351. The reversal of 320441331 is 133144023.

It is not a de Polignac number, because 320441331 - 2³ = 320441323 is a prime.

It is a super-2 number, since 2×320441331² = 205365293226103122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 320441298 and 320441307.

It is not an unprimeable number, because it can be changed into a prime (320441321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9801 + ... + 27146.

It is an arithmetic number, because the mean of its divisors is an integer number (21060360).

Almost surely, 2^320441331 is an apocalyptic number.

320441331 is a deficient number, since it is larger than the sum of its proper divisors (185007309).

320441331 is a wasteful number, since it uses less digits than its factorization.

320441331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37023 (or 37016 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 320441331 is about 17900.8751462044. The cubic root of 320441331 is about 684.3046781396.

Adding to 320441331 its reverse (133144023), we get a palindrome (453585354).

The spelling of 320441331 in words is "three hundred twenty million, four hundred forty-one thousand, three hundred thirty-one".