197894317311 has 12 divisors (see below), whose sum is σ = 285882947688. Its totient is φ = 131913113904.

The previous prime is 197894317241. The next prime is 197894317337. The reversal of 197894317311 is 113713498791.

It is a happy number.

197894317311 is a `hidden beast` number, since 1 + 9 + 7 + 8 + 9 + 4 + 317 + 311 = 666.

It is not a de Polignac number, because 197894317311 - 2²³ = 197885928703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197894317351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1292745 + ... + 1437698.

It is an arithmetic number, because the mean of its divisors is an integer number (23823578974).

Almost surely, 2^197894317311 is an apocalyptic number.

197894317311 is a deficient number, since it is larger than the sum of its proper divisors (87988630377).

197894317311 is a wasteful number, since it uses less digits than its factorization.

197894317311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738502 (or 2738499 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The spelling of 197894317311 in words is "one hundred ninety-seven billion, eight hundred ninety-four million, three hundred seventeen thousand, three hundred eleven".