136713923 has 4 divisors (see below), whose sum is σ = 137127288. Its totient is φ = 136300560.

The previous prime is 136713919. The next prime is 136713931. The reversal of 136713923 is 329317631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136713923 - 2² = 136713919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136713943) 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 3 ways as a sum of consecutive naturals, for example, 206186 + ... + 206847.

It is an arithmetic number, because the mean of its divisors is an integer number (34281822).

Almost surely, 2^136713923 is an apocalyptic number.

136713923 is a deficient number, since it is larger than the sum of its proper divisors (413365).

136713923 is an equidigital number, since it uses as much as digits as its factorization.

136713923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413364.

The product of its digits is 20412, while the sum is 35.

The square root of 136713923 is about 11692.4729206443. The cubic root of 136713923 is about 515.1545996408.

The spelling of 136713923 in words is "one hundred thirty-six million, seven hundred thirteen thousand, nine hundred twenty-three".