103551943 has 4 divisors (see below), whose sum is σ = 112965768. Its totient is φ = 94138120.

The previous prime is 103551941. The next prime is 103551961. The reversal of 103551943 is 349155301.

It is a happy number.

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 103551943 - 2¹ = 103551941 is a prime.

It is a super-3 number, since 3×103551943³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103551941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4706896 + ... + 4706917.

It is an arithmetic number, because the mean of its divisors is an integer number (28241442).

Almost surely, 2^103551943 is an apocalyptic number.

103551943 is a deficient number, since it is larger than the sum of its proper divisors (9413825).

103551943 is an equidigital number, since it uses as much as digits as its factorization.

103551943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9413824.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 103551943 is about 10176.0475136469. The cubic root of 103551943 is about 469.5906243684.

The spelling of 103551943 in words is "one hundred three million, five hundred fifty-one thousand, nine hundred forty-three".