30681116 has 12 divisors (see below), whose sum is σ = 54339432. Its totient is φ = 15155568.

The previous prime is 30681061. The next prime is 30681127. The reversal of 30681116 is 61118603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45875 + ... + 46538.

It is an arithmetic number, because the mean of its divisors is an integer number (4528286).

Almost surely, 2^30681116 is an apocalyptic number.

It is an amenable number.

30681116 is a deficient number, since it is larger than the sum of its proper divisors (23658316).

30681116 is a wasteful number, since it uses less digits than its factorization.

30681116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92500 (or 92498 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 30681116 is about 5539.0537097956. The cubic root of 30681116 is about 313.0572151256.

Adding to 30681116 its reverse (61118603), we get a palindrome (91799719).

The spelling of 30681116 in words is "thirty million, six hundred eighty-one thousand, one hundred sixteen".