320180641 has 12 divisors (see below), whose sum is σ = 355063716. Its totient is φ = 288485120.

The previous prime is 320180639. The next prime is 320180659. The reversal of 320180641 is 146081023.

It can be written as a sum of positive squares in 2 ways, for example, as 53348416 + 266832225 = 7304^2 + 16335^2 .

It is not a de Polignac number, because 320180641 - 2¹ = 320180639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320180681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1965 + ... + 25381.

It is an arithmetic number, because the mean of its divisors is an integer number (29588643).

Almost surely, 2^320180641 is an apocalyptic number.

It is an amenable number.

320180641 is a deficient number, since it is larger than the sum of its proper divisors (34883075).

320180641 is a wasteful number, since it uses less digits than its factorization.

320180641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23552 (or 23541 counting only the distinct ones).

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

The square root of 320180641 is about 17893.5921770895. The cubic root of 320180641 is about 684.1190593622.

The spelling of 320180641 in words is "three hundred twenty million, one hundred eighty thousand, six hundred forty-one".