30681105 has 96 divisors (see below), whose sum is σ = 65116800. Its totient is φ = 12265344.

The previous prime is 30681061. The next prime is 30681127. The reversal of 30681105 is 50118603.

It is not a de Polignac number, because 30681105 - 2⁸ = 30680849 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1614786 + ... + 1614804.

It is an arithmetic number, because the mean of its divisors is an integer number (678300).

Almost surely, 2^30681105 is an apocalyptic number.

30681105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30681105 is an abundant number, since it is smaller than the sum of its proper divisors (34435695).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30681105 is a wasteful number, since it uses less digits than its factorization.

30681105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 30681105 is about 5539.0527168461. The cubic root of 30681105 is about 313.0571777125.

Adding to 30681105 its reverse (50118603), we get a palindrome (80799708).

The spelling of 30681105 in words is "thirty million, six hundred eighty-one thousand, one hundred five".