201331310203187 has 2 divisors, whose sum is σ = 201331310203188. Its totient is φ = 201331310203186.

The previous prime is 201331310203103. The next prime is 201331310203249. The reversal of 201331310203187 is 781302013133102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201331310203187 - 2¹⁴ = 201331310186803 is a prime.

It is a super-2 number, since 2×201331310203187² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201331310203087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100665655101593 + 100665655101594.

It is an arithmetic number, because the mean of its divisors is an integer number (100665655101594).

Almost surely, 2^{201331310203187} is an apocalyptic number.

201331310203187 is a deficient number, since it is larger than the sum of its proper divisors (1).

201331310203187 is an equidigital number, since it uses as much as digits as its factorization.

201331310203187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

Adding to 201331310203187 its reverse (781302013133102), we get a palindrome (982633323336289).

The spelling of 201331310203187 in words is "two hundred one trillion, three hundred thirty-one billion, three hundred ten million, two hundred three thousand, one hundred eighty-seven".