191348313 has 16 divisors (see below), whose sum is σ = 276284736. Its totient is φ = 117097920.

The previous prime is 191348299. The next prime is 191348317. The reversal of 191348313 is 313843191.

It is not a de Polignac number, because 191348313 - 2⁵ = 191348281 is a prime.

It is a super-2 number, since 2×191348313² = 73228353775891938, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (191348317) 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, 6495 + ... + 20612.

It is an arithmetic number, because the mean of its divisors is an integer number (17267796).

Almost surely, 2^191348313 is an apocalyptic number.

191348313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

191348313 is a deficient number, since it is larger than the sum of its proper divisors (84936423).

191348313 is a wasteful number, since it uses less digits than its factorization.

191348313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27304.

The product of its digits is 7776, while the sum is 33.

The square root of 191348313 is about 13832.8707432695. The cubic root of 191348313 is about 576.2463831896.

The spelling of 191348313 in words is "one hundred ninety-one million, three hundred forty-eight thousand, three hundred thirteen".