134581771 has 2 divisors, whose sum is σ = 134581772. Its totient is φ = 134581770.

The previous prime is 134581747. The next prime is 134581781. The reversal of 134581771 is 177185431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134581771 is a prime.

It is a super-2 number, since 2×134581771² = 36224506170992882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 134581771.

It is not a weakly prime, because it can be changed into another prime (134581781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67290885 + 67290886.

It is an arithmetic number, because the mean of its divisors is an integer number (67290886).

Almost surely, 2^134581771 is an apocalyptic number.

134581771 is a deficient number, since it is larger than the sum of its proper divisors (1).

134581771 is an equidigital number, since it uses as much as digits as its factorization.

134581771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 37.

The square root of 134581771 is about 11600.9383672184. The cubic root of 134581771 is about 512.4624867248.

The spelling of 134581771 in words is "one hundred thirty-four million, five hundred eighty-one thousand, seven hundred seventy-one".