199210312 has 16 divisors (see below), whose sum is σ = 426879360. Its totient is φ = 85375824.

The previous prime is 199210303. The next prime is 199210313. The reversal of 199210312 is 213012991.

It is a super-3 number, since 3×199210312³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (199210313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1778608 + ... + 1778719.

It is an arithmetic number, because the mean of its divisors is an integer number (26679960).

Almost surely, 2^199210312 is an apocalyptic number.

It is an amenable number.

199210312 is an abundant number, since it is smaller than the sum of its proper divisors (227669048).

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

199210312 is a wasteful number, since it uses less digits than its factorization.

199210312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3557340 (or 3557336 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 199210312 is about 14114.1883223939. The cubic root of 199210312 is about 584.0328451534.

The spelling of 199210312 in words is "one hundred ninety-nine million, two hundred ten thousand, three hundred twelve".