136340723 has 8 divisors (see below), whose sum is σ = 137822208. Its totient is φ = 134865864.

The previous prime is 136340719. The next prime is 136340741. The reversal of 136340723 is 327043631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136340723 - 2² = 136340719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136340753) 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 7 ways as a sum of consecutive naturals, for example, 47240 + ... + 50042.

It is an arithmetic number, because the mean of its divisors is an integer number (17227776).

Almost surely, 2^136340723 is an apocalyptic number.

136340723 is a deficient number, since it is larger than the sum of its proper divisors (1481485).

136340723 is a wasteful number, since it uses less digits than its factorization.

136340723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 136340723 is about 11676.5030295890. The cubic root of 136340723 is about 514.6854182113.

The spelling of 136340723 in words is "one hundred thirty-six million, three hundred forty thousand, seven hundred twenty-three".