136923205 has 4 divisors (see below), whose sum is σ = 164307852. Its totient is φ = 109538560.

The previous prime is 136923203. The next prime is 136923211. The reversal of 136923205 is 502329631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64995844 + 71927361 = 8062^2 + 8481^2 .

It is not a de Polignac number, because 136923205 - 2¹ = 136923203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136923203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13692316 + ... + 13692325.

It is an arithmetic number, because the mean of its divisors is an integer number (41076963).

Almost surely, 2^136923205 is an apocalyptic number.

It is an amenable number.

136923205 is a deficient number, since it is larger than the sum of its proper divisors (27384647).

136923205 is an equidigital number, since it uses as much as digits as its factorization.

136923205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27384646.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 136923205 is about 11701.4189310528. The cubic root of 136923205 is about 515.4173322531.

The spelling of 136923205 in words is "one hundred thirty-six million, nine hundred twenty-three thousand, two hundred five".