193128103 has 16 divisors (see below), whose sum is σ = 235813120. Its totient is φ = 154478016.

The previous prime is 193128101. The next prime is 193128121. The reversal of 193128103 is 301821391.

It is not a de Polignac number, because 193128103 - 2¹ = 193128101 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 (193128101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1926 + ... + 19747.

It is an arithmetic number, because the mean of its divisors is an integer number (14738320).

Almost surely, 2^193128103 is an apocalyptic number.

193128103 is a deficient number, since it is larger than the sum of its proper divisors (42685017).

193128103 is a wasteful number, since it uses less digits than its factorization.

193128103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21766.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 193128103 is about 13897.0537525045. The cubic root of 193128103 is about 578.0274877873.

Adding to 193128103 its reverse (301821391), we get a palindrome (494949494).

The spelling of 193128103 in words is "one hundred ninety-three million, one hundred twenty-eight thousand, one hundred three".