191007213 has 8 divisors (see below), whose sum is σ = 262891776. Its totient is φ = 123230400.

The previous prime is 191007211. The next prime is 191007251. The reversal of 191007213 is 312700191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 191007213 - 2¹ = 191007211 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191007211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026828 + ... + 1027013.

It is an arithmetic number, because the mean of its divisors is an integer number (32861472).

Almost surely, 2^191007213 is an apocalyptic number.

It is an amenable number.

191007213 is a deficient number, since it is larger than the sum of its proper divisors (71884563).

191007213 is a wasteful number, since it uses less digits than its factorization.

191007213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053875.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 191007213 is about 13820.5359158030. The cubic root of 191007213 is about 575.9037714198.

The spelling of 191007213 in words is "one hundred ninety-one million, seven thousand, two hundred thirteen".