327731013 has 12 divisors (see below), whose sum is σ = 476568300. Its totient is φ = 217020096.

The previous prime is 327731011. The next prime is 327731021. The reversal of 327731013 is 310137723.

It can be written as a sum of positive squares in 2 ways, for example, as 122611329 + 205119684 = 11073^2 + 14322^2 .

It is not a de Polignac number, because 327731013 - 2¹ = 327731011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (327731011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120856 + ... + 123537.

It is an arithmetic number, because the mean of its divisors is an integer number (39714025).

Almost surely, 2^327731013 is an apocalyptic number.

It is an amenable number.

327731013 is a deficient number, since it is larger than the sum of its proper divisors (148837287).

327731013 is a wasteful number, since it uses less digits than its factorization.

327731013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244548 (or 244545 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 327731013 is about 18103.3425919083. The cubic root of 327731013 is about 689.4548750531.

Adding to 327731013 its reverse (310137723), we get a palindrome (637868736).

The spelling of 327731013 in words is "three hundred twenty-seven million, seven hundred thirty-one thousand, thirteen".