134534381 has 2 divisors, whose sum is σ = 134534382. Its totient is φ = 134534380.

The previous prime is 134534369. The next prime is 134534423. The reversal of 134534381 is 183435431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127464100 + 7070281 = 11290^2 + 2659^2 .

It is an emirp because it is prime and its reverse (183435431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134534381 - 2¹⁴ = 134517997 is a prime.

It is a super-2 number, since 2×134534381² = 36198999342106322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134534581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67267190 + 67267191.

It is an arithmetic number, because the mean of its divisors is an integer number (67267191).

Almost surely, 2^134534381 is an apocalyptic number.

It is an amenable number.

134534381 is a deficient number, since it is larger than the sum of its proper divisors (1).

134534381 is an equidigital number, since it uses as much as digits as its factorization.

134534381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 134534381 is about 11598.8956801930. The cubic root of 134534381 is about 512.4023288788.

The spelling of 134534381 in words is "one hundred thirty-four million, five hundred thirty-four thousand, three hundred eighty-one".