30810012 has 24 divisors (see below), whose sum is σ = 72260496. Its totient is φ = 10217088.

The previous prime is 30809971. The next prime is 30810023. The reversal of 30810012 is 21001803.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30809973 and 30810000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4153 + ... + 8880.

It is an arithmetic number, because the mean of its divisors is an integer number (3010854).

Almost surely, 2^30810012 is an apocalyptic number.

It is an amenable number.

30810012 is an abundant number, since it is smaller than the sum of its proper divisors (41450484).

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

30810012 is a wasteful number, since it uses less digits than its factorization.

30810012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13237 (or 13235 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 30810012 is about 5550.6767155006. The cubic root of 30810012 is about 313.4950028329.

Adding to 30810012 its reverse (21001803), we get a palindrome (51811815).

The spelling of 30810012 in words is "thirty million, eight hundred ten thousand, twelve".