138107323 has 4 divisors (see below), whose sum is σ = 138312000. Its totient is φ = 137902648.

The previous prime is 138107297. The next prime is 138107351. The reversal of 138107323 is 323701831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323701831 = 47 ⋅6887273.

It is a cyclic number.

It is not a de Polignac number, because 138107323 - 2⁹ = 138106811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138107291 and 138107300.

It is not an unprimeable number, because it can be changed into a prime (138107383) 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, 101323 + ... + 102676.

It is an arithmetic number, because the mean of its divisors is an integer number (34578000).

Almost surely, 2^138107323 is an apocalyptic number.

138107323 is a deficient number, since it is larger than the sum of its proper divisors (204677).

138107323 is an equidigital number, since it uses as much as digits as its factorization.

138107323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204676.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 138107323 is about 11751.9072069175. The cubic root of 138107323 is about 516.8988537169.

The spelling of 138107323 in words is "one hundred thirty-eight million, one hundred seven thousand, three hundred twenty-three".