201331312004 has 12 divisors (see below), whose sum is σ = 353143493724. Its totient is φ = 100433170944.

The previous prime is 201331312003. The next prime is 201331312057. The reversal of 201331312004 is 400213133102.

It can be written as a sum of positive squares in 2 ways, for example, as 24056630404 + 177274681600 = 155102^2 + 421040^2 .

It is not an unprimeable number, because it can be changed into a prime (201331312003) 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 3 ways as a sum of consecutive naturals, for example, 58119317 + ... + 58122780.

It is an arithmetic number, because the mean of its divisors is an integer number (29428624477).

Almost surely, 2^201331312004 is an apocalyptic number.

It is an amenable number.

201331312004 is a deficient number, since it is larger than the sum of its proper divisors (151812181720).

201331312004 is a wasteful number, since it uses less digits than its factorization.

201331312004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116242534 (or 116242532 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 201331312004 its reverse (400213133102), we get a palindrome (601544445106).

The spelling of 201331312004 in words is "two hundred one billion, three hundred thirty-one million, three hundred twelve thousand, four".