135341581 has 2 divisors, whose sum is σ = 135341582. Its totient is φ = 135341580.

The previous prime is 135341551. The next prime is 135341587. The reversal of 135341581 is 185143531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135256900 + 84681 = 11630^2 + 291^2 .

It is a cyclic number.

It is not a de Polignac number, because 135341581 - 2⁹ = 135341069 is a prime.

It is a super-2 number, since 2×135341581² = 36634687095159122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135341587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67670790 + 67670791.

It is an arithmetic number, because the mean of its divisors is an integer number (67670791).

Almost surely, 2^135341581 is an apocalyptic number.

It is an amenable number.

135341581 is a deficient number, since it is larger than the sum of its proper divisors (1).

135341581 is an equidigital number, since it uses as much as digits as its factorization.

135341581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The square root of 135341581 is about 11633.6400580386. The cubic root of 135341581 is about 513.4250827833.

The spelling of 135341581 in words is "one hundred thirty-five million, three hundred forty-one thousand, five hundred eighty-one".