138231282305 has 8 divisors (see below), whose sum is σ = 166273430400. Its totient is φ = 110321098096.

The previous prime is 138231282263. The next prime is 138231282337. The reversal of 138231282305 is 503282132831.

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 138231282305 - 2²² = 138227088001 is a prime.

It is a super-3 number, since 3×138231282305³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32988665 + ... + 32992854.

It is an arithmetic number, because the mean of its divisors is an integer number (20784178800).

Almost surely, 2^138231282305 is an apocalyptic number.

It is an amenable number.

138231282305 is a deficient number, since it is larger than the sum of its proper divisors (28042148095).

138231282305 is an equidigital number, since it uses as much as digits as its factorization.

138231282305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65981943.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 138231282305 in words is "one hundred thirty-eight billion, two hundred thirty-one million, two hundred eighty-two thousand, three hundred five".