136363261 has 4 divisors (see below), whose sum is σ = 137637792. Its totient is φ = 135088732.

The previous prime is 136363229. The next prime is 136363301. The reversal of 136363261 is 162363631.

136363261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 162363631 = 757 ⋅214483.

It is a cyclic number.

It is not a de Polignac number, because 136363261 - 2⁵ = 136363229 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136363211) 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, 637105 + ... + 637318.

It is an arithmetic number, because the mean of its divisors is an integer number (34409448).

Almost surely, 2^136363261 is an apocalyptic number.

It is an amenable number.

136363261 is a deficient number, since it is larger than the sum of its proper divisors (1274531).

136363261 is a wasteful number, since it uses less digits than its factorization.

136363261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274530.

The product of its digits is 11664, while the sum is 31.

The square root of 136363261 is about 11677.4680903011. The cubic root of 136363261 is about 514.7137769207.

The spelling of 136363261 in words is "one hundred thirty-six million, three hundred sixty-three thousand, two hundred sixty-one".