103900181 has 16 divisors (see below), whose sum is σ = 133042560. Its totient is φ = 78770880.

The previous prime is 103900171. The next prime is 103900213. The reversal of 103900181 is 181009301.

It is a cyclic number.

It is not a de Polignac number, because 103900181 - 2¹⁰ = 103899157 is a prime.

It is a super-2 number, since 2×103900181² = 21590495223665522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103900171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15386 + ... + 21083.

It is an arithmetic number, because the mean of its divisors is an integer number (8315160).

Almost surely, 2^103900181 is an apocalyptic number.

103900181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103900181 is a deficient number, since it is larger than the sum of its proper divisors (29142379).

103900181 is a wasteful number, since it uses less digits than its factorization.

103900181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36524.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 103900181 is about 10193.1438231784. The cubic root of 103900181 is about 470.1164356160.

Adding to 103900181 its reverse (181009301), we get a palindrome (284909482).

The spelling of 103900181 in words is "one hundred three million, nine hundred thousand, one hundred eighty-one".