199919313 has 16 divisors (see below), whose sum is σ = 323102400. Its totient is φ = 121163040.

The previous prime is 199919309. The next prime is 199919323. The reversal of 199919313 is 313919991.

It is not a de Polignac number, because 199919313 - 2² = 199919309 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199919323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336268 + ... + 336861.

It is an arithmetic number, because the mean of its divisors is an integer number (20193900).

Almost surely, 2^199919313 is an apocalyptic number.

It is an amenable number.

199919313 is a deficient number, since it is larger than the sum of its proper divisors (123183087).

199919313 is a wasteful number, since it uses less digits than its factorization.

199919313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673149 (or 673143 counting only the distinct ones).

The product of its digits is 59049, while the sum is 45.

The square root of 199919313 is about 14139.2826197088. The cubic root of 199919313 is about 584.7248936580.

It can be divided in two parts, 1999 and 19313, that added together give a palindrome (21312).

The spelling of 199919313 in words is "one hundred ninety-nine million, nine hundred nineteen thousand, three hundred thirteen".