138323 has 2 divisors, whose sum is σ = 138324. Its totient is φ = 138322.

The previous prime is 138319. The next prime is 138337. The reversal of 138323 is 323831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138323 - 2² = 138319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138295 and 138304.

It is not a weakly prime, because it can be changed into another prime (138373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69161 + 69162.

It is an arithmetic number, because the mean of its divisors is an integer number (69162).

2¹³⁸³²³ is an apocalyptic number.

138323 is a deficient number, since it is larger than the sum of its proper divisors (1).

138323 is an equidigital number, since it uses as much as digits as its factorization.

138323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 138323 is about 371.9180017154. The cubic root of 138323 is about 51.7167787589.

The spelling of 138323 in words is "one hundred thirty-eight thousand, three hundred twenty-three".