138500323 has 8 divisors (see below), whose sum is σ = 151381328. Its totient is φ = 125937504.

The previous prime is 138500321. The next prime is 138500333. The reversal of 138500323 is 323005831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138500323 - 2¹ = 138500321 is a prime.

It is a super-2 number, since 2×138500323² = 38364678942208658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138500321) 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 in 7 ways as a sum of consecutive naturals, for example, 78636 + ... + 80377.

It is an arithmetic number, because the mean of its divisors is an integer number (18922666).

Almost surely, 2^138500323 is an apocalyptic number.

138500323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

138500323 is a deficient number, since it is larger than the sum of its proper divisors (12881005).

138500323 is a wasteful number, since it uses less digits than its factorization.

138500323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159093.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 138500323 is about 11768.6160188868. The cubic root of 138500323 is about 517.3886874250.

The spelling of 138500323 in words is "one hundred thirty-eight million, five hundred thousand, three hundred twenty-three".