136151281 has 4 divisors (see below), whose sum is σ = 155601472. Its totient is φ = 116701092.

The previous prime is 136151273. The next prime is 136151297. The reversal of 136151281 is 182151631.

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 136151281 - 2³ = 136151273 is a prime.

It is a super-2 number, since 2×136151281² = 37074342635881922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136151251) 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 3 ways as a sum of consecutive naturals, for example, 9725085 + ... + 9725098.

It is an arithmetic number, because the mean of its divisors is an integer number (38900368).

Almost surely, 2^136151281 is an apocalyptic number.

It is an amenable number.

136151281 is a deficient number, since it is larger than the sum of its proper divisors (19450191).

136151281 is an equidigital number, since it uses as much as digits as its factorization.

136151281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19450190.

The product of its digits is 1440, while the sum is 28.

The square root of 136151281 is about 11668.3881063324. The cubic root of 136151281 is about 514.4469269103.

The spelling of 136151281 in words is "one hundred thirty-six million, one hundred fifty-one thousand, two hundred eighty-one".