134381587 has 4 divisors (see below), whose sum is σ = 134419176. Its totient is φ = 134344000.

The previous prime is 134381581. The next prime is 134381593. The reversal of 134381587 is 785183431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785183431 = 2069 ⋅379499.

It is an interprime number because it is at equal distance from previous prime (134381581) and next prime (134381593).

It is a cyclic number.

It is not a de Polignac number, because 134381587 - 2²⁷ = 163859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134381581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12793 + ... + 20794.

It is an arithmetic number, because the mean of its divisors is an integer number (33604794).

Almost surely, 2^134381587 is an apocalyptic number.

134381587 is a deficient number, since it is larger than the sum of its proper divisors (37589).

134381587 is an equidigital number, since it uses as much as digits as its factorization.

134381587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37588.

The product of its digits is 80640, while the sum is 40.

The square root of 134381587 is about 11592.3072336787. The cubic root of 134381587 is about 512.2082727598.

The spelling of 134381587 in words is "one hundred thirty-four million, three hundred eighty-one thousand, five hundred eighty-seven".