136240723 has 2 divisors, whose sum is σ = 136240724. Its totient is φ = 136240722.

The previous prime is 136240717. The next prime is 136240739. The reversal of 136240723 is 327042631.

It is a weak prime.

It is an emirp because it is prime and its reverse (327042631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136240723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136240691 and 136240700.

It is not a weakly prime, because it can be changed into another prime (136240123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68120361 + 68120362.

It is an arithmetic number, because the mean of its divisors is an integer number (68120362).

Almost surely, 2^136240723 is an apocalyptic number.

136240723 is a deficient number, since it is larger than the sum of its proper divisors (1).

136240723 is an equidigital number, since it uses as much as digits as its factorization.

136240723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 136240723 is about 11672.2201401447. The cubic root of 136240723 is about 514.5595542994.

The spelling of 136240723 in words is "one hundred thirty-six million, two hundred forty thousand, seven hundred twenty-three".