30423312 has 60 divisors (see below), whose sum is σ = 87236604. Its totient is φ = 9891840.

The previous prime is 30423299. The next prime is 30423359. The reversal of 30423312 is 21332403.

It can be written as a sum of positive squares in 2 ways, for example, as 8856576 + 21566736 = 2976^2 + 4644^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3328 + ... + 8480.

Almost surely, 2^30423312 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 30423312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43618302).

30423312 is an abundant number, since it is smaller than the sum of its proper divisors (56813292).

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

30423312 is a wasteful number, since it uses less digits than its factorization.

30423312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5208 (or 5199 counting only the distinct ones).

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

The square root of 30423312 is about 5515.7331335009. The cubic root of 30423312 is about 312.1779064257.

Adding to 30423312 its reverse (21332403), we get a palindrome (51755715).

Subtracting from 30423312 its reverse (21332403), we obtain a palindrome (9090909).

The spelling of 30423312 in words is "thirty million, four hundred twenty-three thousand, three hundred twelve".