136312139 has 2 divisors, whose sum is σ = 136312140. Its totient is φ = 136312138.

The previous prime is 136312117. The next prime is 136312199. The reversal of 136312139 is 931213631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136312139 - 2⁸ = 136311883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136312109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68156069 + 68156070.

It is an arithmetic number, because the mean of its divisors is an integer number (68156070).

Almost surely, 2^136312139 is an apocalyptic number.

136312139 is a deficient number, since it is larger than the sum of its proper divisors (1).

136312139 is an equidigital number, since it uses as much as digits as its factorization.

136312139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 29.

The square root of 136312139 is about 11675.2789688298. The cubic root of 136312139 is about 514.6494475541.

The spelling of 136312139 in words is "one hundred thirty-six million, three hundred twelve thousand, one hundred thirty-nine".