30211912 has 8 divisors (see below), whose sum is σ = 56647350. Its totient is φ = 15105952.

The previous prime is 30211877. The next prime is 30211921. The reversal of 30211912 is 21911203.

It can be written as a sum of positive squares in only one way, i.e., 18198756 + 12013156 = 4266^2 + 3466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 30211912.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1888237 + ... + 1888252.

Almost surely, 2^30211912 is an apocalyptic number.

It is an amenable number.

30211912 is a deficient number, since it is larger than the sum of its proper divisors (26435438).

30211912 is a wasteful number, since it uses less digits than its factorization.

30211912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776495 (or 3776491 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 30211912 is about 5496.5363639296. The cubic root of 30211912 is about 311.4531567238.

The spelling of 30211912 in words is "thirty million, two hundred eleven thousand, nine hundred twelve".