138100003 has 4 divisors (see below), whose sum is σ = 138124800. Its totient is φ = 138075208.

The previous prime is 138099977. The next prime is 138100019. The reversal of 138100003 is 300001831.

138100003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300001831 = 5443 ⋅55117.

It is a cyclic number.

It is not a de Polignac number, because 138100003 - 2⁵ = 138099971 is a prime.

It is a super-2 number, since 2×138100003² = 38143221657200018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138100003.

It is not an unprimeable number, because it can be changed into a prime (138100103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273 + ... + 16621.

It is an arithmetic number, because the mean of its divisors is an integer number (34531200).

Almost surely, 2^138100003 is an apocalyptic number.

138100003 is a deficient number, since it is larger than the sum of its proper divisors (24797).

138100003 is an equidigital number, since it uses as much as digits as its factorization.

138100003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24796.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 138100003 is about 11751.5957639803. The cubic root of 138100003 is about 516.8897212867.

Adding to 138100003 its reverse (300001831), we get a palindrome (438101834).

The spelling of 138100003 in words is "one hundred thirty-eight million, one hundred thousand, three".