134911391 has 2 divisors, whose sum is σ = 134911392. Its totient is φ = 134911390.

The previous prime is 134911363. The next prime is 134911397. The reversal of 134911391 is 193119431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 134911391 - 2⁶ = 134911327 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134911397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67455695 + 67455696.

It is an arithmetic number, because the mean of its divisors is an integer number (67455696).

Almost surely, 2^134911391 is an apocalyptic number.

134911391 is a deficient number, since it is larger than the sum of its proper divisors (1).

134911391 is an equidigital number, since it uses as much as digits as its factorization.

134911391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 32.

The square root of 134911391 is about 11615.1362884815. The cubic root of 134911391 is about 512.8805229502.

The spelling of 134911391 in words is "one hundred thirty-four million, nine hundred eleven thousand, three hundred ninety-one".