320531245 has 8 divisors (see below), whose sum is σ = 393582816. Its totient is φ = 250461456.

The previous prime is 320531221. The next prime is 320531249. The reversal of 320531245 is 542135023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320531245 - 2⁵ = 320531213 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 (320531249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745207 + ... + 745636.

It is an arithmetic number, because the mean of its divisors is an integer number (49197852).

Almost surely, 2^320531245 is an apocalyptic number.

It is an amenable number.

320531245 is a deficient number, since it is larger than the sum of its proper divisors (73051571).

320531245 is a wasteful number, since it uses less digits than its factorization.

320531245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490891.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 320531245 is about 17903.3864115144. The cubic root of 320531245 is about 684.3686761438.

Adding to 320531245 its reverse (542135023), we get a palindrome (862666268).

The spelling of 320531245 in words is "three hundred twenty million, five hundred thirty-one thousand, two hundred forty-five".