135111187 has 2 divisors, whose sum is σ = 135111188. Its totient is φ = 135111186.

The previous prime is 135111139. The next prime is 135111191. The reversal of 135111187 is 781111531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135111187 is a prime.

It is not a weakly prime, because it can be changed into another prime (135111127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67555593 + 67555594.

It is an arithmetic number, because the mean of its divisors is an integer number (67555594).

Almost surely, 2^135111187 is an apocalyptic number.

135111187 is a deficient number, since it is larger than the sum of its proper divisors (1).

135111187 is an equidigital number, since it uses as much as digits as its factorization.

135111187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 28.

The square root of 135111187 is about 11623.7337805027. The cubic root of 135111187 is about 513.1335802421.

The spelling of 135111187 in words is "one hundred thirty-five million, one hundred eleven thousand, one hundred eighty-seven".