193105212 has 12 divisors (see below), whose sum is σ = 450578856. Its totient is φ = 64368400.

The previous prime is 193105207. The next prime is 193105219. The reversal of 193105212 is 212501391.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193105219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8046039 + ... + 8046062.

It is an arithmetic number, because the mean of its divisors is an integer number (37548238).

Almost surely, 2^193105212 is an apocalyptic number.

193105212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

193105212 is an abundant number, since it is smaller than the sum of its proper divisors (257473644).

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

193105212 is a wasteful number, since it uses less digits than its factorization.

193105212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16092108 (or 16092106 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 193105212 is about 13896.2301362636. The cubic root of 193105212 is about 578.0046494919.

The spelling of 193105212 in words is "one hundred ninety-three million, one hundred five thousand, two hundred twelve".