103540691 has 4 divisors (see below), whose sum is σ = 103588632. Its totient is φ = 103492752.

The previous prime is 103540669. The next prime is 103540711. The reversal of 103540691 is 196045301.

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 103540691 - 2¹⁴ = 103524307 is a prime.

It is a super-3 number, since 3×103540691³ (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 (103540091) 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, 20570 + ... + 25103.

It is an arithmetic number, because the mean of its divisors is an integer number (25897158).

Almost surely, 2^103540691 is an apocalyptic number.

103540691 is a deficient number, since it is larger than the sum of its proper divisors (47941).

103540691 is an equidigital number, since it uses as much as digits as its factorization.

103540691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47940.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 103540691 is about 10175.4946317120. The cubic root of 103540691 is about 469.5736151106.

Adding to 103540691 its reverse (196045301), we get a palindrome (299585992).

The spelling of 103540691 in words is "one hundred three million, five hundred forty thousand, six hundred ninety-one".