201342501187 has 2 divisors, whose sum is σ = 201342501188. Its totient is φ = 201342501186.

The previous prime is 201342501181. The next prime is 201342501209. The reversal of 201342501187 is 781105243102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201342501187 - 2³ = 201342501179 is a prime.

It is not a weakly prime, because it can be changed into another prime (201342501181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100671250593 + 100671250594.

It is an arithmetic number, because the mean of its divisors is an integer number (100671250594).

Almost surely, 2^201342501187 is an apocalyptic number.

201342501187 is a deficient number, since it is larger than the sum of its proper divisors (1).

201342501187 is an equidigital number, since it uses as much as digits as its factorization.

201342501187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 201342501187 its reverse (781105243102), we get a palindrome (982447744289).

The spelling of 201342501187 in words is "two hundred one billion, three hundred forty-two million, five hundred one thousand, one hundred eighty-seven".