138309703 has 12 divisors (see below), whose sum is σ = 162489672. Its totient is φ = 117373200.

The previous prime is 138309581. The next prime is 138309707. The reversal of 138309703 is 307903831.

It is a de Polignac number, because none of the positive numbers 2^k-138309703 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 (138309707) 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 11 ways as a sum of consecutive naturals, for example, 9025 + ... + 18922.

It is an arithmetic number, because the mean of its divisors is an integer number (13540806).

Almost surely, 2^138309703 is an apocalyptic number.

138309703 is a deficient number, since it is larger than the sum of its proper divisors (24179969).

138309703 is a wasteful number, since it uses less digits than its factorization.

138309703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28062 (or 28055 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 138309703 is about 11760.5145720755. The cubic root of 138309703 is about 517.1512152655.

The spelling of 138309703 in words is "one hundred thirty-eight million, three hundred nine thousand, seven hundred three".