30243312 has 120 divisors (see below), whose sum is σ = 94147248. Its totient is φ = 8985600.

The previous prime is 30243287. The next prime is 30243313. The reversal of 30243312 is 21334203.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30243313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96468 + ... + 96780.

Almost surely, 2^30243312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30243312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47073624).

30243312 is an abundant number, since it is smaller than the sum of its proper divisors (63903936).

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

30243312 is a wasteful number, since it uses less digits than its factorization.

30243312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 30243312 is about 5499.3919663905. The cubic root of 30243312 is about 311.5610197305.

Adding to 30243312 its reverse (21334203), we get a palindrome (51577515).

It can be divided in two parts, 3024 and 3312, that added together give a palindrome (6336).

The spelling of 30243312 in words is "thirty million, two hundred forty-three thousand, three hundred twelve".