103513543 has 4 divisors (see below), whose sum is σ = 118301200. Its totient is φ = 88725888.

The previous prime is 103513541. The next prime is 103513549. The reversal of 103513543 is 345315301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345315301 = 4583 ⋅75347.

It is a cyclic number.

It is not a de Polignac number, because 103513543 - 2¹ = 103513541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103513541) 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, 7393818 + ... + 7393831.

It is an arithmetic number, because the mean of its divisors is an integer number (29575300).

Almost surely, 2^103513543 is an apocalyptic number.

103513543 is a deficient number, since it is larger than the sum of its proper divisors (14787657).

103513543 is an equidigital number, since it uses as much as digits as its factorization.

103513543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14787656.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 103513543 is about 10174.1605550532. The cubic root of 103513543 is about 469.5325713473.

Adding to 103513543 its reverse (345315301), we get a palindrome (448828844).

The spelling of 103513543 in words is "one hundred three million, five hundred thirteen thousand, five hundred forty-three".