134136991 has 2 divisors, whose sum is σ = 134136992. Its totient is φ = 134136990.

The previous prime is 134136983. The next prime is 134137001. The reversal of 134136991 is 199631431.

It is a weak prime.

It is an emirp because it is prime and its reverse (199631431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134136991 - 2³ = 134136983 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134136991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134136901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67068495 + 67068496.

It is an arithmetic number, because the mean of its divisors is an integer number (67068496).

Almost surely, 2^134136991 is an apocalyptic number.

134136991 is a deficient number, since it is larger than the sum of its proper divisors (1).

134136991 is an equidigital number, since it uses as much as digits as its factorization.

134136991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 134136991 is about 11581.7525012409. The cubic root of 134136991 is about 511.8973170036.

The spelling of 134136991 in words is "one hundred thirty-four million, one hundred thirty-six thousand, nine hundred ninety-one".