191248317 has 32 divisors (see below), whose sum is σ = 323084160. Its totient is φ = 110764800.

The previous prime is 191248307. The next prime is 191248339. The reversal of 191248317 is 713842191.

It is a happy number.

It is not a de Polignac number, because 191248317 - 2¹⁴ = 191231933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191248307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10059 + ... + 21992.

It is an arithmetic number, because the mean of its divisors is an integer number (10096380).

Almost surely, 2^191248317 is an apocalyptic number.

191248317 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

191248317 is a deficient number, since it is larger than the sum of its proper divisors (131835843).

191248317 is a wasteful number, since it uses less digits than its factorization.

191248317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32090 (or 32084 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 191248317 is about 13829.2558368120. The cubic root of 191248317 is about 576.1459862174.

The spelling of 191248317 in words is "one hundred ninety-one million, two hundred forty-eight thousand, three hundred seventeen".