30681033 has 8 divisors (see below), whose sum is σ = 41401248. Its totient is φ = 20207424.

The previous prime is 30680999. The next prime is 30681047. The reversal of 30681033 is 33018603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30681033 - 2¹³ = 30672841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30680994 and 30681012.

It is not an unprimeable number, because it can be changed into a prime (30681533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61360 + ... + 61857.

It is an arithmetic number, because the mean of its divisors is an integer number (5175156).

Almost surely, 2^30681033 is an apocalyptic number.

It is an amenable number.

30681033 is a deficient number, since it is larger than the sum of its proper divisors (10720215).

30681033 is a wasteful number, since it uses less digits than its factorization.

30681033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123303.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 30681033 is about 5539.0462175360. The cubic root of 30681033 is about 313.0569328263.

Adding to 30681033 its reverse (33018603), we get a palindrome (63699636).

The spelling of 30681033 in words is "thirty million, six hundred eighty-one thousand, thirty-three".