138210317 has 16 divisors (see below), whose sum is σ = 164073600. Its totient is φ = 113910720.

The previous prime is 138210287. The next prime is 138210337. The reversal of 138210317 is 713012831.

It is not a de Polignac number, because 138210317 - 2⁶ = 138210253 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 (138210337) 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 15 ways as a sum of consecutive naturals, for example, 53342 + ... + 55872.

It is an arithmetic number, because the mean of its divisors is an integer number (10254600).

Almost surely, 2^138210317 is an apocalyptic number.

It is an amenable number.

138210317 is a deficient number, since it is larger than the sum of its proper divisors (25863283).

138210317 is a wasteful number, since it uses less digits than its factorization.

138210317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 138210317 is about 11756.2884023828. The cubic root of 138210317 is about 517.0273148075.

The spelling of 138210317 in words is "one hundred thirty-eight million, two hundred ten thousand, three hundred seventeen".