136923 has 4 divisors (see below), whose sum is σ = 182568. Its totient is φ = 91280.

The previous prime is 136897. The next prime is 136943. The reversal of 136923 is 329631.

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 136923 - 2⁶ = 136859 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 136893 and 136902.

It is not an unprimeable number, because it can be changed into a prime (136943) 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, 22818 + ... + 22823.

It is an arithmetic number, because the mean of its divisors is an integer number (45642).

2¹³⁶⁹²³ is an apocalyptic number.

136923 is a deficient number, since it is larger than the sum of its proper divisors (45645).

136923 is an equidigital number, since it uses as much as digits as its factorization.

136923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45644.

The product of its digits is 972, while the sum is 24.

The square root of 136923 is about 370.0310797757. The cubic root of 136923 is about 51.5417075027.

It can be divided in two parts, 13692 and 3, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 136923 in words is "one hundred thirty-six thousand, nine hundred twenty-three".