103906309385 has 4 divisors (see below), whose sum is σ = 124687571268. Its totient is φ = 83125047504.

The previous prime is 103906309363. The next prime is 103906309387. The reversal of 103906309385 is 583903609301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583903609301 = 2927 ⋅199488763.

It can be written as a sum of positive squares in 2 ways, for example, as 50060035081 + 53846274304 = 223741^2 + 232048^2 .

It is a cyclic number.

It is not a de Polignac number, because 103906309385 - 2¹⁰ = 103906308361 is a prime.

It is a super-2 number, since 2×103906309385² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103906309387) 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, 10390630934 + ... + 10390630943.

It is an arithmetic number, because the mean of its divisors is an integer number (31171892817).

Almost surely, 2^103906309385 is an apocalyptic number.

It is an amenable number.

103906309385 is a deficient number, since it is larger than the sum of its proper divisors (20781261883).

103906309385 is an equidigital number, since it uses as much as digits as its factorization.

103906309385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20781261882.

The product of its (nonzero) digits is 524880, while the sum is 47.

The spelling of 103906309385 in words is "one hundred three billion, nine hundred six million, three hundred nine thousand, three hundred eighty-five".