201031331113 has 2 divisors, whose sum is σ = 201031331114. Its totient is φ = 201031331112.

The previous prime is 201031331071. The next prime is 201031331117. The reversal of 201031331113 is 311133130102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176120390889 + 24910940224 = 419667^2 + 157832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201031331113 is a prime.

It is not a weakly prime, because it can be changed into another prime (201031331117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100515665556 + 100515665557.

It is an arithmetic number, because the mean of its divisors is an integer number (100515665557).

Almost surely, 2^201031331113 is an apocalyptic number.

It is an amenable number.

201031331113 is a deficient number, since it is larger than the sum of its proper divisors (1).

201031331113 is an equidigital number, since it uses as much as digits as its factorization.

201031331113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 201031331113 its reverse (311133130102), we get a palindrome (512164461215).

The spelling of 201031331113 in words is "two hundred one billion, thirty-one million, three hundred thirty-one thousand, one hundred thirteen".