138687103 has 2 divisors, whose sum is σ = 138687104. Its totient is φ = 138687102.

The previous prime is 138687097. The next prime is 138687113. The reversal of 138687103 is 301786831.

It is a weak prime.

It is an emirp because it is prime and its reverse (301786831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138687103 is a prime.

It is a super-2 number, since 2×138687103² = 38468225077065218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138687113) 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 as a sum of consecutive naturals, namely, 69343551 + 69343552.

It is an arithmetic number, because the mean of its divisors is an integer number (69343552).

Almost surely, 2^138687103 is an apocalyptic number.

138687103 is a deficient number, since it is larger than the sum of its proper divisors (1).

138687103 is an equidigital number, since it uses as much as digits as its factorization.

138687103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 138687103 is about 11776.5488577936. The cubic root of 138687103 is about 517.6211645001.

It can be divided in two parts, 138 and 687103, that added together give a square (687241 = 829²).

The spelling of 138687103 in words is "one hundred thirty-eight million, six hundred eighty-seven thousand, one hundred three".