30681103 has 16 divisors (see below), whose sum is σ = 33970176. Its totient is φ = 27609120.

The previous prime is 30681061. The next prime is 30681127. The reversal of 30681103 is 30118603.

It is a cyclic number.

It is not a de Polignac number, because 30681103 - 2¹⁷ = 30550031 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 (30681163) 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, 25800 + ... + 26962.

It is an arithmetic number, because the mean of its divisors is an integer number (2123136).

Almost surely, 2^30681103 is an apocalyptic number.

30681103 is a deficient number, since it is larger than the sum of its proper divisors (3289073).

30681103 is a wasteful number, since it uses less digits than its factorization.

30681103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 30681103 is about 5539.0525363098. The cubic root of 30681103 is about 313.0571709101.

Adding to 30681103 its reverse (30118603), we get a palindrome (60799706).

Subtracting from 30681103 its reverse (30118603), we obtain a square (562500 = 750²).

The spelling of 30681103 in words is "thirty million, six hundred eighty-one thousand, one hundred three".