30144312 has 80 divisors (see below), whose sum is σ = 92129400. Its totient is φ = 9132480.

The previous prime is 30144293. The next prime is 30144319. The reversal of 30144312 is 21344103.

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 (30144319) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5014 + ... + 9242.

Almost surely, 2^30144312 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 30144312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46064700).

30144312 is an abundant number, since it is smaller than the sum of its proper divisors (61985088).

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

30144312 is a wasteful number, since it uses less digits than its factorization.

30144312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4258 (or 4245 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 30144312 is about 5490.3835931563. The cubic root of 30144312 is about 311.2206881963.

Adding to 30144312 its reverse (21344103), we get a palindrome (51488415).

The spelling of 30144312 in words is "thirty million, one hundred forty-four thousand, three hundred twelve".