138322271 has 8 divisors (see below), whose sum is σ = 143535744. Its totient is φ = 133199640.

The previous prime is 138322241. The next prime is 138322273. The reversal of 138322271 is 172223831.

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 138322271 - 2¹⁰ = 138321247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138322273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19601 + ... + 25706.

It is an arithmetic number, because the mean of its divisors is an integer number (17941968).

Almost surely, 2^138322271 is an apocalyptic number.

138322271 is a deficient number, since it is larger than the sum of its proper divisors (5213473).

138322271 is an equidigital number, since it uses as much as digits as its factorization.

138322271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45421.

The product of its digits is 4032, while the sum is 29.

The square root of 138322271 is about 11761.0488902989. The cubic root of 138322271 is about 517.1668790487.

The spelling of 138322271 in words is "one hundred thirty-eight million, three hundred twenty-two thousand, two hundred seventy-one".