136856271 has 8 divisors (see below), whose sum is σ = 182553904. Its totient is φ = 91198080.

The previous prime is 136856261. The next prime is 136856281. The reversal of 136856271 is 172658631.

It is an interprime number because it is at equal distance from previous prime (136856261) and next prime (136856281).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136856271 - 2⁶ = 136856207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136856201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490 + ... + 16551.

It is an arithmetic number, because the mean of its divisors is an integer number (22819238).

Almost surely, 2^136856271 is an apocalyptic number.

136856271 is a deficient number, since it is larger than the sum of its proper divisors (45697633).

136856271 is a wasteful number, since it uses less digits than its factorization.

136856271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19721.

The product of its digits is 60480, while the sum is 39.

The square root of 136856271 is about 11698.5585009436. The cubic root of 136856271 is about 515.3333324501. Note that the first 5 decimals are identical.

The spelling of 136856271 in words is "one hundred thirty-six million, eight hundred fifty-six thousand, two hundred seventy-one".