201031321311 has 16 divisors (see below), whose sum is σ = 298319751520. Its totient is φ = 133797873600.

The previous prime is 201031321277. The next prime is 201031321343. The reversal of 201031321311 is 113123130102.

201031321311 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 31 + 321 + 311 = 666.

It is not a de Polignac number, because 201031321311 - 2²³ = 201022932703 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 (201031329311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6178120 + ... + 6210573.

It is an arithmetic number, because the mean of its divisors is an integer number (18644984470).

Almost surely, 2^201031321311 is an apocalyptic number.

201031321311 is a deficient number, since it is larger than the sum of its proper divisors (97288430209).

201031321311 is a wasteful number, since it uses less digits than its factorization.

201031321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12389303 (or 12389297 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 201031321311 its reverse (113123130102), we get a palindrome (314154451413).

The spelling of 201031321311 in words is "two hundred one billion, thirty-one million, three hundred twenty-one thousand, three hundred eleven".