138311841 has 8 divisors (see below), whose sum is σ = 184945600. Its totient is φ = 91942992.

The previous prime is 138311839. The next prime is 138311851. The reversal of 138311841 is 148113831.

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

It is not a de Polignac number, because 138311841 - 2¹ = 138311839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138311799 and 138311808.

It is not an unprimeable number, because it can be changed into a prime (138311851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65005 + ... + 67098.

It is an arithmetic number, because the mean of its divisors is an integer number (23118200).

Almost surely, 2^138311841 is an apocalyptic number.

It is an amenable number.

138311841 is a deficient number, since it is larger than the sum of its proper divisors (46633759).

138311841 is a wasteful number, since it uses less digits than its factorization.

138311841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132455.

The product of its digits is 2304, while the sum is 30.

The square root of 138311841 is about 11760.6054691074. The cubic root of 138311841 is about 517.1538799703.

The spelling of 138311841 in words is "one hundred thirty-eight million, three hundred eleven thousand, eight hundred forty-one".