136280137 has 4 divisors (see below), whose sum is σ = 155748736. Its totient is φ = 116811540.

The previous prime is 136280117. The next prime is 136280159. The reversal of 136280137 is 731082631.

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: 731082631 = 2689 ⋅271879.

It is a cyclic number.

It is not a de Polignac number, because 136280137 - 2⁷ = 136280009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136280099 and 136280108.

It is not an unprimeable number, because it can be changed into a prime (136280117) 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, 9734289 + ... + 9734302.

It is an arithmetic number, because the mean of its divisors is an integer number (38937184).

Almost surely, 2^136280137 is an apocalyptic number.

It is an amenable number.

136280137 is a deficient number, since it is larger than the sum of its proper divisors (19468599).

136280137 is an equidigital number, since it uses as much as digits as its factorization.

136280137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19468598.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 136280137 is about 11673.9083857978. The cubic root of 136280137 is about 514.6091696528.

The spelling of 136280137 in words is "one hundred thirty-six million, two hundred eighty thousand, one hundred thirty-seven".