305051212 has 12 divisors (see below), whose sum is σ = 534264696. Its totient is φ = 152404160.

The previous prime is 305051189. The next prime is 305051221. The reversal of 305051212 is 212150503.

It is a self number, because there is not a number n which added to its sum of digits gives 305051212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24589 + ... + 34852.

It is an arithmetic number, because the mean of its divisors is an integer number (44522058).

Almost surely, 2^305051212 is an apocalyptic number.

It is an amenable number.

305051212 is a deficient number, since it is larger than the sum of its proper divisors (229213484).

305051212 is a wasteful number, since it uses less digits than its factorization.

305051212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60728 (or 60726 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 305051212 is about 17465.7153303264. The cubic root of 305051212 is about 673.1692223863.

The spelling of 305051212 in words is "three hundred five million, fifty-one thousand, two hundred twelve".