30684312 has 32 divisors (see below), whose sum is σ = 85234800. Its totient is φ = 10228032.

The previous prime is 30684293. The next prime is 30684317. The reversal of 30684312 is 21348603.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30684317) 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 7 ways as a sum of consecutive naturals, for example, 70813 + ... + 71244.

Almost surely, 2^30684312 is an apocalyptic number.

It is an amenable number.

30684312 is an abundant number, since it is smaller than the sum of its proper divisors (54550488).

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

30684312 is a wasteful number, since it uses less digits than its factorization.

30684312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142072 (or 142062 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 30684312 is about 5539.3421992146. The cubic root of 30684312 is about 313.0680849619.

The spelling of 30684312 in words is "thirty million, six hundred eighty-four thousand, three hundred twelve".