136923317 has 2 divisors, whose sum is σ = 136923318. Its totient is φ = 136923316.

The previous prime is 136923307. The next prime is 136923331. The reversal of 136923317 is 713329631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112381201 + 24542116 = 10601^2 + 4954^2 .

It is a cyclic number.

It is not a de Polignac number, because 136923317 - 2¹² = 136919221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136923307) 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 as a sum of consecutive naturals, namely, 68461658 + 68461659.

It is an arithmetic number, because the mean of its divisors is an integer number (68461659).

Almost surely, 2^136923317 is an apocalyptic number.

It is an amenable number.

136923317 is a deficient number, since it is larger than the sum of its proper divisors (1).

136923317 is an equidigital number, since it uses as much as digits as its factorization.

136923317 is an odious number, because the sum of its binary digits is odd.

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

The square root of 136923317 is about 11701.4237167962. The cubic root of 136923317 is about 515.4174727862.

The spelling of 136923317 in words is "one hundred thirty-six million, nine hundred twenty-three thousand, three hundred seventeen".