136817143 has 4 divisors (see below), whose sum is σ = 136889928. Its totient is φ = 136744360.

The previous prime is 136817137. The next prime is 136817183. The reversal of 136817143 is 341718631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136817143 - 2¹⁷ = 136686071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136817099 and 136817108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136817113) 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, 33496 + ... + 37357.

It is an arithmetic number, because the mean of its divisors is an integer number (34222482).

Almost surely, 2^136817143 is an apocalyptic number.

136817143 is a deficient number, since it is larger than the sum of its proper divisors (72785).

136817143 is an equidigital number, since it uses as much as digits as its factorization.

136817143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72784.

The product of its digits is 12096, while the sum is 34.

The square root of 136817143 is about 11696.8860386002. The cubic root of 136817143 is about 515.2842155080.

The spelling of 136817143 in words is "one hundred thirty-six million, eight hundred seventeen thousand, one hundred forty-three".