100403165 has 16 divisors (see below), whose sum is σ = 125991936. Its totient is φ = 76665600.

The previous prime is 100403131. The next prime is 100403167. The reversal of 100403165 is 561304001.

It is not a de Polignac number, because 100403165 - 2⁸ = 100402909 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 (100403167) 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 15 ways as a sum of consecutive naturals, for example, 100820 + ... + 101810.

It is an arithmetic number, because the mean of its divisors is an integer number (7874496).

Almost surely, 2^100403165 is an apocalyptic number.

It is an amenable number.

100403165 is a deficient number, since it is larger than the sum of its proper divisors (25588771).

100403165 is an equidigital number, since it uses as much as digits as its factorization.

100403165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 100403165 is about 10020.1379731020. The cubic root of 100403165 is about 464.7818223399.

Adding to 100403165 its reverse (561304001), we get a palindrome (661707166).

The spelling of 100403165 in words is "one hundred million, four hundred three thousand, one hundred sixty-five".