134111591 has 2 divisors, whose sum is σ = 134111592. Its totient is φ = 134111590.

The previous prime is 134111587. The next prime is 134111603. The reversal of 134111591 is 195111431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 134111591 - 2² = 134111587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134111591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134111561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67055795 + 67055796.

It is an arithmetic number, because the mean of its divisors is an integer number (67055796).

Almost surely, 2^134111591 is an apocalyptic number.

134111591 is a deficient number, since it is larger than the sum of its proper divisors (1).

134111591 is an equidigital number, since it uses as much as digits as its factorization.

134111591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 26.

The square root of 134111591 is about 11580.6558967962. The cubic root of 134111591 is about 511.8650042351.

The spelling of 134111591 in words is "one hundred thirty-four million, one hundred eleven thousand, five hundred ninety-one".