136352309 has 2 divisors, whose sum is σ = 136352310. Its totient is φ = 136352308.

The previous prime is 136352273. The next prime is 136352339. The reversal of 136352309 is 903253631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132940900 + 3411409 = 11530^2 + 1847^2 .

It is a cyclic number.

It is not a de Polignac number, because 136352309 - 2¹² = 136348213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136352339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68176154 + 68176155.

It is an arithmetic number, because the mean of its divisors is an integer number (68176155).

Almost surely, 2^136352309 is an apocalyptic number.

It is an amenable number.

136352309 is a deficient number, since it is larger than the sum of its proper divisors (1).

136352309 is an equidigital number, since it uses as much as digits as its factorization.

136352309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 136352309 is about 11676.9991436156. Note that the first 3 decimals coincide. The cubic root of 136352309 is about 514.6999968254.

The spelling of 136352309 in words is "one hundred thirty-six million, three hundred fifty-two thousand, three hundred nine".