30906312 has 32 divisors (see below), whose sum is σ = 81333600. Its totient is φ = 9759744.

The previous prime is 30906311. The next prime is 30906329. The reversal of 30906312 is 21360903.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (30906311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33433 + ... + 34344.

It is an arithmetic number, because the mean of its divisors is an integer number (2541675).

Almost surely, 2^30906312 is an apocalyptic number.

It is an amenable number.

30906312 is an abundant number, since it is smaller than the sum of its proper divisors (50427288).

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

30906312 is a wasteful number, since it uses less digits than its factorization.

30906312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67805 (or 67801 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 30906312 is about 5559.3445656840. The cubic root of 30906312 is about 313.8212838883.

The spelling of 30906312 in words is "thirty million, nine hundred six thousand, three hundred twelve".