103603691 has 4 divisors (see below), whose sum is σ = 103624632. Its totient is φ = 103582752.

The previous prime is 103603673. The next prime is 103603693. The reversal of 103603691 is 196306301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196306301 = 587 ⋅334423.

It is a cyclic number.

It is not a de Polignac number, because 103603691 - 2²⁶ = 36494827 is a prime.

It is a super-3 number, since 3×103603691³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103603693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556 + ... + 14478.

It is an arithmetic number, because the mean of its divisors is an integer number (25906158).

Almost surely, 2^103603691 is an apocalyptic number.

103603691 is a deficient number, since it is larger than the sum of its proper divisors (20941).

103603691 is an equidigital number, since it uses as much as digits as its factorization.

103603691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20940.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 103603691 is about 10178.5898335673. The cubic root of 103603691 is about 469.6688341640.

Adding to 103603691 its reverse (196306301), we get a palindrome (299909992).

The spelling of 103603691 in words is "one hundred three million, six hundred three thousand, six hundred ninety-one".