30345312 has 24 divisors (see below), whose sum is σ = 79656696. Its totient is φ = 10115072.

The previous prime is 30345269. The next prime is 30345313. The reversal of 30345312 is 21354303.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30345313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157953 + ... + 158144.

It is an arithmetic number, because the mean of its divisors is an integer number (3319029).

Almost surely, 2^30345312 is an apocalyptic number.

30345312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30345312 is an abundant number, since it is smaller than the sum of its proper divisors (49311384).

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

30345312 is a wasteful number, since it uses less digits than its factorization.

30345312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316110 (or 316102 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 30345312 is about 5508.6579127769. The cubic root of 30345312 is about 311.9108884234.

Adding to 30345312 its reverse (21354303), we get a palindrome (51699615).

The spelling of 30345312 in words is "thirty million, three hundred forty-five thousand, three hundred twelve".