191317040934 has 12 divisors (see below), whose sum is σ = 382636224684. Its totient is φ = 63771989844.

The previous prime is 191317040903. The next prime is 191317040939. The reversal of 191317040934 is 439040713191.

191317040934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191317040939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 982119 + ... + 1160685.

It is an arithmetic number, because the mean of its divisors is an integer number (31886352057).

Almost surely, 2^191317040934 is an apocalyptic number.

191317040934 is an abundant number, since it is smaller than the sum of its proper divisors (191319183750).

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

191317040934 is an frugal number, since it uses more digits than its factorization.

191317040934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357139 (or 178572 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 191317040934 in words is "one hundred ninety-one billion, three hundred seventeen million, forty thousand, nine hundred thirty-four".