138573323 has 12 divisors (see below), whose sum is σ = 164242080. Its totient is φ = 116533872.

The previous prime is 138573311. The next prime is 138573361. The reversal of 138573323 is 323375831.

It is a de Polignac number, because none of the positive numbers 2^k-138573323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138573823) 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 11 ways as a sum of consecutive naturals, for example, 24083 + ... + 29276.

It is an arithmetic number, because the mean of its divisors is an integer number (13686840).

Almost surely, 2^138573323 is an apocalyptic number.

138573323 is a deficient number, since it is larger than the sum of its proper divisors (25668757).

138573323 is an equidigital number, since it uses as much as digits as its factorization.

138573323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53426 (or 53419 counting only the distinct ones).

The product of its digits is 45360, while the sum is 35.

The square root of 138573323 is about 11771.7170795088. The cubic root of 138573323 is about 517.4795722681.

The spelling of 138573323 in words is "one hundred thirty-eight million, five hundred seventy-three thousand, three hundred twenty-three".