136581341 has 4 divisors (see below), whose sum is σ = 147087612. Its totient is φ = 126075072.

The previous prime is 136581331. The next prime is 136581353. The reversal of 136581341 is 143185631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 143185631 = 73 ⋅1961447.

It can be written as a sum of positive squares in 2 ways, for example, as 27984100 + 108597241 = 5290^2 + 10421^2 .

It is a cyclic number.

It is not a de Polignac number, because 136581341 - 2¹⁰ = 136580317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136581298 and 136581307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136581301) 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, 5253116 + ... + 5253141.

It is an arithmetic number, because the mean of its divisors is an integer number (36771903).

Almost surely, 2^136581341 is an apocalyptic number.

It is an amenable number.

136581341 is a deficient number, since it is larger than the sum of its proper divisors (10506271).

136581341 is a wasteful number, since it uses less digits than its factorization.

136581341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10506270.

The product of its digits is 8640, while the sum is 32.

The square root of 136581341 is about 11686.8020005475. The cubic root of 136581341 is about 514.9880174420.

The spelling of 136581341 in words is "one hundred thirty-six million, five hundred eighty-one thousand, three hundred forty-one".