136304161 has 4 divisors (see below), whose sum is σ = 155776192. Its totient is φ = 116832132.

The previous prime is 136304143. The next prime is 136304171. The reversal of 136304161 is 161403631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136304161 - 2⁷ = 136304033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136304111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9736005 + ... + 9736018.

It is an arithmetic number, because the mean of its divisors is an integer number (38944048).

Almost surely, 2^136304161 is an apocalyptic number.

It is an amenable number.

136304161 is a deficient number, since it is larger than the sum of its proper divisors (19472031).

136304161 is an equidigital number, since it uses as much as digits as its factorization.

136304161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19472030.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 136304161 is about 11674.9373017588. The cubic root of 136304161 is about 514.6394069874.

Adding to 136304161 its reverse (161403631), we get a palindrome (297707792).

The spelling of 136304161 in words is "one hundred thirty-six million, three hundred four thousand, one hundred sixty-one".