103243691 has 4 divisors (see below), whose sum is σ = 103267800. Its totient is φ = 103219584.

The previous prime is 103243661. The next prime is 103243709. The reversal of 103243691 is 196342301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 103243691 - 2⁶ = 103243627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103243661) 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, 3701 + ... + 14838.

It is an arithmetic number, because the mean of its divisors is an integer number (25816950).

Almost surely, 2^103243691 is an apocalyptic number.

103243691 is a deficient number, since it is larger than the sum of its proper divisors (24109).

103243691 is an equidigital number, since it uses as much as digits as its factorization.

103243691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24108.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 103243691 is about 10160.8902661135. The cubic root of 103243691 is about 469.1242042797.

Adding to 103243691 its reverse (196342301), we get a palindrome (299585992).

The spelling of 103243691 in words is "one hundred three million, two hundred forty-three thousand, six hundred ninety-one".