134371813 has 2 divisors, whose sum is σ = 134371814. Its totient is φ = 134371812.

The previous prime is 134371789. The next prime is 134371841. The reversal of 134371813 is 318173431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127622209 + 6749604 = 11297^2 + 2598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134371813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134371613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67185906 + 67185907.

It is an arithmetic number, because the mean of its divisors is an integer number (67185907).

Almost surely, 2^134371813 is an apocalyptic number.

It is an amenable number.

134371813 is a deficient number, since it is larger than the sum of its proper divisors (1).

134371813 is an equidigital number, since it uses as much as digits as its factorization.

134371813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 134371813 is about 11591.8856533353. The cubic root of 134371813 is about 512.1958542801.

The spelling of 134371813 in words is "one hundred thirty-four million, three hundred seventy-one thousand, eight hundred thirteen".