30020312 has 32 divisors (see below), whose sum is σ = 64627200. Its totient is φ = 12806304.

The previous prime is 30020299. The next prime is 30020327. The reversal of 30020312 is 21302003.

It is a junction number, because it is equal to n+sod(n) for n = 30020293 and 30020302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12263 + ... + 14505.

It is an arithmetic number, because the mean of its divisors is an integer number (2019600).

Almost surely, 2^30020312 is an apocalyptic number.

It is an amenable number.

30020312 is an abundant number, since it is smaller than the sum of its proper divisors (34606888).

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

30020312 is a wasteful number, since it uses less digits than its factorization.

30020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495 (or 2491 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30020312 is about 5479.0794847310. The cubic root of 30020312 is about 310.7933615597.

Adding to 30020312 its reverse (21302003), we get a palindrome (51322315).

The spelling of 30020312 in words is "thirty million, twenty thousand, three hundred twelve".